2025 Season 1 Release Notes [2024.12.09.03]

The iRacing 2025 Season 1 Release Build has arrived! This release includes new content, features, improvements, and fixes for 2025 Season 1, which officially starts on December 17th at 0000 UTC! The iRacing garage expands with five new bays for: Acura NSX GT3 EVO 22, BMW M2 CSR, Ferrari 499P, Supercars Chevrolet Camaro Gen 3, and Supercars Ford Mustang Gen 3. The BMW M2 CSR is being released as new FREE content to all iRacing Members! iRacing is also excited to offer two new tracks: Huset's Speedway and Thruxton Circuit. The Track Art Team has also completed a full overhaul of the classic New Hampshire Motor Speedway, bringing its look and feel up to modern standards.

The Test Drive Service which is available whenever iRacing is down for maintenance has been re-built from the ground-up, is integrated seamlessly with the iRacing application, and is now known as Demo Drive! Our graphics and physics developers have tag-teamed an outstanding upgrade to the debris system which now includes mud and gravel, and all debris types are now easier to see and impact racing much more realistically. We are pioneering some upgrades to the iRacing netcode system with this Season Release, including improving the experience for a lagging driver as well as everyone else in the race with them. The lighting for the entire iRacing world has undergone an improvement which increases contrast and reduces some excessive brightness. Your spotter will now inform you if any damage you receive is going to have a negative impact on an aspect of your vehicle performance. AI drivers have also now been trained in the art of headlight flashing when passing.

Our hydromancers have prepared the Formula Vee for rain racing, and ALL FIVE new cars come equipped with a unique set of rain tires. AI Racing systems have been programmed and implemented on six cars, including: Acura NSX GT3 EVO 22, BMW M2 CSR, Ferrari 499P, Supercars Chevrolet Camaro Gen 3, Supercars Ford Mustang Gen 3, and Williams FW31. AI Drivers have mastered Thruxton Circuit and two of New Hampshire’s Road Courses. And last but not least our vehicle dynamics team has polished and included over 400 new and updated vehicle setups to give you the optimal driving experience using any car at any track. Prepare your racing rig for 2025 and get hyped for iRacing 2025 Season 1!

Season highlights include:

Acura NSX GT3 EVO 22

BMW M2 CSR [FREE!]

Ferrari 499P

Supercars Chevrolet Camaro Gen 3

Supercars Ford Mustang Gen 3

Huset's Speedway

Thruxton Circuit

New Hampshire Motor Speedway (2024 Art Upgrade)

Demo Drive

Debris Refresh

Netcode Improvements

Specular Lighting Upgrade

Spotter Damage Effects Report

AI Flashing Behavior

Formula Vee and ALL FIVE new cars are all Rain-Ready

SIX new cars for AI Racing (Acura NSX GT3 EVO 22, BMW M2 CSR, Ferrari 499P, Supercars Chevrolet Camaro Gen 3, Supercars Ford Mustang Gen 3, and Williams FW31)

THREE new tracks and configs for AI Racing (Thruxton Circuit, New Hampshire Motor Speedway -Road Course & Road Course with North Oval)

Over 400 happily crafted iRacing vehicle setups

Visit our 2025 Season 1 features page here: https://www.iracing.com/seasons/2025-s1/

Full 2025 Season 1 Release details are below.

iRACING:

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Demo Drive

After the 2025 Season 1 Release, the old Test Drive service (https://testdrive.iracing.com) is to be discontinued, and instead we’ll have integrated the system directly into the iRacing launcher - it is now called Demo Drive!

- - With this change, there are no longer separate credentials needed to drive while iRacing is in maintenance. Instead, this service uses the same credentials you already use to log in to iRacing and the iRacing Forums.

Whenever you launch iRacing while we are down for maintenance, you may now connect to Demo Drive, which lets you drive any content that is on your machine, so long as it’s up to date.

- - Select a Car, Track, Display mode, and start driving!

When we leave maintenance mode, Demo Drive will remain running for a period of time and a countdown will appear to let members know how long it will remain up. Navigation links to and from Demo Drive will be available in iRacing when Demo Drive is available.

As with the Test Drive Service before it, newly released content will not be available in Demo Drive until the following Season.

Season Recap

A new “Recaps” tab has been added to the Profile Page of iRacing!

- - Here, you can see a customized recap of your performance stats for the previous season and year on iRacing. This new feature houses the season recaps that were previously emailed to Members, with the addition of new yearly recaps!

- - You can also view your Recaps in the Companion App, via a new Recap section on the Profile Page!

Settings

We have redesigned the Settings page to enhance usability and organization. The Settings are now available on a dedicated full-page interface instead of a modal window. This update introduces a tabbed layout with clearly defined sections: General, Preferences, Network, and About.

- - General: Manage basic account settings and display options.

- - Preferences: Customize your user experience with personalized settings.

- - Network: Configure connectivity and data-related options.

- - About: Access information about the application, including version details and support resources.

Results & Stats

Fixed an issue where the Driver Standings page could show a different License Class than the driver’s profile page.

Paint Shop

DOF Reality paint shop sponsor logo has been updated.

Protests

A new entry has been added to the Protest Violations list: Unsafe Rejoin.

Sporting Code

A variety of Sporting Code changes and updates have been made including: better defined the coverage of the iRacing Official Sporting Code, updated and improved all references to penalties and their types, added sections describing the Pace Car and Rallycross Racing, several new Glossary terms have been added, internal document links have been fixed, and a new protestable offense, Unsafe Rejoin, has been added.

Legacy Membersite

Endpoints on the Legacy Membersite that have been available for scraping data will cease to function on March 11, 2025 (2025 Season 2 Release).

All 3rd parties are expected to be using the endpoints available in the /data API. For more information, please reference the following posts in the forums:

- - https://forums.iracing.com/discussion/15068/general-availability-of-data-api/p1

- - Original Announcement: https://forums.iracing.com/discussion/62065/notice-for-season-3-2024-summary-of-legacy-membersite-features-sunset

SIMULATION:

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Application

Some underlying program parameters have been updated and iRacing now explicitly will not support any operating system older than Windows 10.

Race Servers

Fixed an issue where the time of day offset for start time was not being applied to the final Session timeslot of any event for Official Racing.

Connectivity

Changes have been made to NetCode to smooth adding cars back into the world and reduce occurrence of extrapolated car vs ground collisions. This solves an issue that could occur where drivers with poor connections could have their cars exert excessive forces when their position in the world was updated.

Dynamic Track

The dynamic track debris system has received an overhaul, adding new types of debris, improving their physics properties, upgrading their appearance, and vastly improving how debris is generated and moves around the track over time.

Gravel has been added as a new Dynamic Track debris type. Gravel can be found on a variety of off-track surfaces and reduces tire grip on racing surfaces.

Mud has been added as a new Dynamic Track debris type. Mud is generated when tires tear up the grass, and behaves like a mix of dirt and water.

The grip adjustments and physics behaviors applied by the various Dynamic Track debris types have been fine-tuned by science.

Dynamic Track debris accumulation and dispersion algorithms have been improved, with far superior tracking and accuracy for the amounts and locations of all debris of all types everywhere in the world.

Dynamic Track debris pick-up and throw logic and parameters for tires of various constructions have been updated.

Debris of all types can now be held on the car body itself, instead of only tires, and it may be shed based on velocity changes.

Adjusted the amount of debris picked up by tires based on the wetness of the track, tire, and debris type.

Aerodynamic effects pick-up and move track debris.

Improved the textures and rendering of all Dynamic Track debris types to make them easier to see, especially at a distance. This includes rubber marbles, dirt, dust, grass, mud, and gravel.

Pit crews have been trained to sweep their pit stalls at the start of Sessions - no debris begins in pit stalls.

iRacing Weather System

The Formula Vee has had its tires updated, and is now ready for wet racing!

ALL FIVE new cars come with a set of rain tires in addition to their normal racing tires. Don’t forget to swap if the weather is looking grim!

- - Acura NSX GT3 EVO 22

- - BMW M2 CSR

- - Ferrari 499P

- - Supercars Chevrolet Camaro Gen 3

- - Supercars Ford Mustang Gen 3

Improved the precision for handling the start and end times for Sessions within an event, and carrying the weather and water states through the simulated intervening time to the next Session.

Water spray will now interact with discarded vehicle parts.

Updated a fix for an older issue where water levels were re-rendering whenever a camera approached - causing the shape and level of the water to constantly morph or flicker.

The effects of evaporation on temperature before an event begins have been updated. Now, even with static weather or at dirt tracks, moisture and track temperatures are more accurate.

Fixed an issue that could occur at Oval tracks using Timeline Mode Weather where local rain was not correctly forbidden to fall during sessions if the “No Rain” option was enabled. This was traced back to a regional vs national weather governance dispute which our lawyers handled brilliantly.

Race Control

Cautions are now disallowed if the White Flag has been raised.

- - This fixes an issue where Automatic Full Course Yellow can be thrown after the leader starts their white flag lap.

- - This fixes an issue where a Yellow Flag can be thrown on GWC (Green/White/Checker) restart if a crash occurs before the Start/Finish line.

For Dirt Ovals with pitting enabled, and for Asphalt Ovals of size one mile, medium, and short, lapped cars are now allowed to pit with leaders during cautions, reducing caution sequence by a lap.

- - This has been done as part of trying to reduce the length of caution race restarts. These changes were originally done for longer ovals in 2020 and have been positively received.

- The new BMW M2 CSR has been enabled as a new pace car that you may select for Fred, Flawless Wheelman, to drive!

Fixed an issue where drivers could get penalized for passing other drivers and/or Fred's Pace Car under yellow after the race had ended.

Fixed an issue where drivers were unable to serve Drive-Through Penalties on the final lap before getting disqualified.

Fixed an issue with Do Not Count (DNC) Caution Laps where the 2nd place driver was given the lead on consecutive cautions.

Fixed an issue where drivers could slowly creep forward on Standing Starts without receiving a Jump Start penalty.

Fixed an issue where Barney would never throw the green flag if all drivers elected to start from the pits. These were very unexciting races.

Fixed an issue where Fred, Flawless Wheelman, would drive the Pace Car down pit road before the race was over during a Green/White/Checker finish.

Dirt Racing

The initial bumpiness of dirt oval racing surfaces has been reduced slightly.

AI Racing

AI Racing now allows for up to 16 car models to be used in a single Session.

AI Drivers have been trained in the ancient art of headlight flashing when preparing to make a pass. If you’re in their way, they’ll let you know!

AI Drivers have gained a greater awareness of their vehicle positioning, and will now be assessed incident points for "Out of Control" or "Running Off Track", just like their human counterparts.

AI Drivers are now fully versed in the following content:

- - Acura NSX GT3 EVO 22

- - BMW M2 CSR

- - Ferrari 499P

- - Supercars Chevrolet Camaro Gen 3

- - Supercars Ford Mustang Gen 3

- - Williams FW31

- - New Hampshire Motor Speedway - Road Course

- - New Hampshire Motor Speedway - Road Course with North Oval

- - Thruxton Circuit

Several AI Vehicles have received updates which improve their tire temperature modeling, making them far more accurate and comparable to a player-driven car. This improves AI Drivers’ accuracy and performance, especially at extreme temperatures. The cars receiving this upgrade this Season include:

- - GTP Class Cars

- - Dallara P217

- - Ferrari 499P

- - Global Mazda MX-5

- - Late Model Stock

- - Lotus 79

- - NASCAR Trucks Series Class Trucks

- - SCCA Spec Racer Ford

- - Street Stock Class Cars

The Autumn 2024 Sessions for AI Driver School have come to a close. This semester saw a sharp focus on the emulation of human behaviors and blurring the line between man and machine. The top graduate projects and presentations included the following:

- - Headlight Flashing Through the Ages - An Evolutionary Behavior Symposium

- - Taking Control of Your Life and Your Car with special guest car KITT

- - Underutilized Racing Tactics: Passing on the Apron

- - A Geological Analysis of Loose Racing Surfaces

- - Learning from Nature: Observe Turtles Recovering from 180° Rolls

- - Accepting Hopelessness & Despair, and Knowing When to Reset!

- - Next Semester Sign-Ups - Host a Foreign Exchange Student from Microsoft AI

AI Drivers have completed some special focus training, improving their skill, lines, rain racing-ability, performance, and more with the following additional content:

- - GT3 Class Cars

- - Atlanta Motor Speedway

- - Circuit de Nevers Magny-Cours

- - Circuit Zolder

- - Lime Rock Park

- - MotorLand Aragón

- - New Hampshire Motor Speedway

- - Slinger Speedway - Oval

Fixed an issue in Multi-Class AI Racing where the player’s grid position could be incorrect.

Spotter

The Spotter has audited some of the AI Driver School classes, and has become more versed in racing knowledge. He will use this new found know-how to better inform you of the damage state of your car, and how that damage may impact your driving ability. This includes the following new spotter calls and updated calls:

- - Engine Damage: Engine power losses including slight, severe, and totalled.

- - Aerodynamic Damage: Top speed reduction, downforce reduction, and oversteer or understeer effects.

- - Wheel Damage: Grip reduction, and wheel alignment changes.

- - These new messages will only play if the spotter chattiness is set to "high". Some of the existing messages about damage have been moved from "high" to "medium" chattiness.

These new messages about how damage affects your driving will also play during a requested damage report.

Spanish language Spotter Pack has been updated, thanks to Ari Cejas!

Italian language Spotter Pack has been updated, thanks to Renzo A. Olivieri!

Italian language Spotter Pack has been updated, thanks to Marco Arcidiacono!

Pit Stop

The Auto Fuel system has been added to all cars that were missing it. Some vehicles do not have Auto Fuel either by design or for other reasons, including:

- - Dirt Oval Cars (do not refuel)

- - McLaren MP4-30 (by design)

- - Mercedes-AMG W12 E Performance (by design)

- - Mercedes-AMG W13 E Performance (by design)

- - Porsche Mission R (it’s electric!)

- - Super Formula SF23 (by design)

Fixed an issue where fuel fill amounts were sometimes silently modified during driver swaps.

Graphics

Greatly improved the specular (reflectivity) rendering for all objects in the simulation, providing greater color value and reducing a white-washing effect that could occur.

- - This was a long-standing graphics issue where specular maps were essentially “double-exposed” by the sun in cubemaps, causing some blown-out, white-wash, or a milky tone in many textures. This also fixes an issue where you could see the sun in reflections on surfaces that were completely in shadow where there should be no sun visible. Specular rendering is now much more realistic, with a greater range of intensity available.

Dynamic Track Rendering is now always enabled within the simulator to ensure the proper experience with rain and track debris.

- - Low Shaders are now available to be used at all times as they are not dependent on Dynamic Track Rendering being enabled.

The graphics options for Anti-Aliasing have been updated to be more intuitive. Anti-Aliasing (AA) options include: Off, FXAA, SMAA, and MSAA. Multisample Anti-Aliasing (MSAA) has its own sub-set of graphics options. Each of these settings are now orange to convey a Simulation restart is required for these changes to take effect.

Higher quality filtering-options have been added for MSAA. These filters consider a larger number of MSAA-samples, to improve quality without increasing cost during geometry rendering. Filtered MSAAx2 should in most cases match the old MSAAx4. Options available include: 2x, 4x, and 8x. Sharpness of the filter can be tweaked using the new filter-options, Simple, Soft, Neutral, and Sharp. The legacy option is available as the Simple filter.

Settings for Anisotropic Texture Filtering have been removed. They now always use x16.

A new entry “AutoNoDynEmptyLOD=1” has been added to the “rendererDX11.ini” file. This allows objects to utilize a lower Level-of-Detail (LOD) model if needed when dynamic LODs kick in.

Debris rendering has been reworked to improve visibility at all distances.

Tonemapping has been improved to better match the format expected by non-HDR monitors. This removes a milky look that was particularly noticeable at night.

Screen-Space Ambient Occlusion (SSAO) has been heavily optimized.

Sky-rendering has been updated to improve effective resolution.

The distortion effect of water shaders is now reduced if the water is more shallow.

PopcornFX version has been updated.

Fixed an issue where we were filtering lighting in our cubemap as well as downsampling.

Fixed an issue where specular maps (and their effects) were not being rendered in mirrors.

Fixed several issues with the Graphics and Replay Options, especially with how the performance class sliders function, where the selection could sometimes not change when dragged, or it was getting reset after restarting the Simulator.

Fixed an issue where some particles were appearing near the camera instead of wherever they should have been appearing.

Fixed an issue with some screen space reflection shaders, especially for rain, that were not properly supporting single pass stereo for VR nor MVP/SMP for triples.

Fixed an issue in cloud-rendering that was causing clear skies to not be as clear as they should be.

Fixed an issue that could cause odd lighting of crowds.

Fixed an issue causing SSAO to not be applied on trees.

Audio

Audio spatial separation has been optimized for cockpit view cameras.

- - The in-car stereo and surround sound array now has been improved, with a wider soundstage to allow for a truer representation of our sound recordings which are largely done in 360 or binaural formats. This enhances realism and your driving auditory experience for all sound systems ranging from headsets, to stereo speakers, to surround sound systems.

All members now have the audio API set to XAudio.

- - If it is necessary, Direct Sound can still be used by setting it in the “app.ini” file. After running the Simulator, in the “app.ini” file, "devSpeakerAPI" becomes "devSpeakerAPISelect" with a value of 2. If you need to use DirectSound for your hardware to function, change this value to 1.

A volume slider has been added to the Replay Options menu to control the volume in Replay.

Curb sounds at high speeds for cameras inside the cockpit have been improved.

Fixed an issue where a code clock-smash could be triggered whenever any audio device properties were changed.

Fixed a rare issue where XAudio2 crashes.

Replay

Updated the processing for Replays that were captured with vehicles still using the Original Damage Model.

Fixed an issue where the Replay camera could violently shake.

Controls

For all stockcars, force feedback should now stay smooth without large spikes when driving at about 25 mph.

CARS:

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<Car Class> GTP Class Cars

These vehicles now correctly utilize the MGUK while in the pits - except the Ferrari 499P.

Tire model and parameters have been updated.

Convection cooling for tires has been updated.

Rain tires have been updated.

Plank shapes have been updated to better match the real-world skid positions.

Pit scripts have been updated to allow changing of any two tires for the same time cost, reduced overall time variance, and aligned refueling rate to real world rules (40 seconds to fill the tank).

<Car Class> NASCAR Cup Series Class Cars

Garage tooltips have been updated to explain that rear end gear ratios have limited selections at many tracks.

<Car Class> NASCAR Cup Series Next Gen Class Cars

Reworked aerodynamic damage penalties to provide greater downforce loss and a reduced drag penalty. Also, if your engine or wheels sustain heavy enough damage, it may be beyond your pit crews’ skills to repair - you’re toast!

Garage tooltips have been updated to explain that rear end gear ratios have limited selections at many tracks.

Fixed an issue where hood flaps were not deforming correctly when open or damaged.

Fixed a driver animation hiccup.

<Car Class> NASCAR Legends 1987 Class Cars

Dashboard metal color has been improved.

iRacing setups have been updated.

<Car Class> NASCAR Truck Class Trucks

Garage tooltips have been updated to explain that rear end gear ratios have limited selections at many tracks.

iRacing setups have been updated.

<Car Class> NASCAR Xfinity Series Class Cars

iRacing setups have been updated.

<Car Class> Street Stock Class Cars

iRacing setups have been updated.

<Car Class> Supercars - Gen 3

NEW CARS and NEW CAR CLASS!

TWO new cars have been added which comprise the brand new Car Class, Supercars - Gen 3, including the Supercars Chevrolet Camaro Gen 3, and the Supercars Ford Mustang Gen 3.

Since this is a new generation of Supercars, customers who had purchased either the Supercars Ford Mustang GT or Supercars Holden ZB Commodore prior to the 2025 Season 1 Release on December 10th have received iRacing credits based on how recently they completed that purchase. If a customer owned both cars, he or she received credits independently for each car based on the date of purchase. Customers can view the iRacing Credits they were awarded, if any, in the My Account > Account History > Gifts Received History. iRacing Credits awarded are based on the following purchase timetable history:

- - 0-90 days: 100% of purchase price

- - 91-180 days: 75% of purchase price

- - 181-365 days: 50% of purchase price

- - 366+ days: 0% of purchase price

AI Drivers are fully trained for racing with these vehicles!

These cars are rain-racing ready!

- - These cars have a separate rain tire set, optimized for performance in the wet.

- - There is currently a known issue where swapping to the rain tire compound during a pit stop does not actually swap to the rain tire compound - instead a new set of the dry compound tires are applied. We’re still teaching the pit crew the difference, but rest assured we’ll have this Patched imminently!

Acura ARX-06 GTP

Rain tire properties have been updated.

Aerodynamic properties have been updated.

Acura NSX GT3 EVO 22

NEW CAR!

The Acura NSX GT3 EVO 22, a new Sports Car, is now available for purchase and racing!

- - Building off the successes of the original NSX GT3, which debuted in 2017 and won dozens of races and the IMSA GTD championship, the Acura NSX GT3 EVO 22 made its debut for the 2022 IMSA WeatherTech SportsCar Championship season. It ended its debut season with a checkered flag at the Petit Le Mans for Gradient Racing, who had already given the EVO 22 its first IMSA podium at Long Beach earlier in the year, and it added numerous other victories and championships in other series around the world that same year. The NSX GT3 EVO 22 refined its predecessor's reliable platform with re-tuned suspension geometry, upgraded intercoolers, and wheel system revisions, among other improvements. At its heart remains Acura's 3.5-liter twin-turbocharged V6 engine, capable of producing 520 horsepower. As with other GT3 machines, the car features adjustable traction control, anti-roll bars, and rear wing settings to help drivers maximize performance.

Purchase the Acura NSX GT3 EVO 22 from the iRacing store today!

AI Drivers are fully trained for racing with this vehicle!

This car is rain-racing ready!

- - This car has a separate rain tire set, optimized for performance in the wet.

ARCA Menards Chevy / Gen 4 Cup

Rev limit parameters for D-Box and external lights have been updated.

(ARCA Menards Chevrolet Impala) - iRacing setups have been updated.

BMW M2 CSR

NEW CAR!

The BMW M2 CSR, a new Sports Car, is now available for racing!

- - BMW's modern racing pedigree extends to all levels of the sports car racing ladder, not just the very highest ones. Its support for track day heroes and upcoming amateurs is no more apparent than in the M2 CSR, homologated for TCX class racing and competing internationally in its own M2 CS Racing Cup. BMW Motorsport and BMW M collaborated to design the car after adapting key learnings from the creation of the M4 GT4 to entry-level racing. Weighing in at 3405 pounds and producing 365 horsepower from a 3.0-liter I6 engine in its Cup variant, the M2 CSR offers plenty of power for aspiring future stars who are looking for something that's not quite a GT4, but also faster than many other entry-level vehicles. The car also features a fully FIA-approved roll cage, racing rear wing and front splitter, and specially tuned ABS system.

The BMW M2 CSR is FREE new iRacing base content, and all Members can find this car already parked in their garage!

AI Drivers are fully trained for racing with this vehicle!

This car is rain-racing ready!

- - This car has a separate rain tire set, optimized for performance in the wet.

BMW M4 GT3

External vehicle textures have been updated with darker plastics and toning down weathering effects.

Fixed an issue where windshield wipers were shaking if driver arms were disabled.

BMW M8 GTE

Lightmaps have been updated.

BMW M Hybrid V8

Rain tires have been updated.

Aerodynamic properties have been updated.

Ride height sensors have been updated to match our standards: bottom of the skids at axle centerlines.

Pit exit sounds have been improved.

Fixed an issue where windshield wipers were shaking if driver arms were disabled.

Cadillac V-Series.R GTP

Rain tire properties have been updated.

Aerodynamic properties have been updated.

Ride height sensors have been updated to match our standards: bottom of the skids at axle centerlines.

Vehicle audio for engine load dynamics, gearshift, ignition cut, and backfire sounds have been improved.

Fixed an issue where windshield wipers were shaking if driver arms were disabled.

Dallara F3

iRacing setups have been updated.

Dallara IR18

Auto Fuel lap margin may now be edited in a Fixed Setup race.

iRacing setups have been updated.

Dallara P217

A full-scale vehicle systems revamp has been completed for 2025 Season 1 to suit the IMSA '24 LMP2 rule set!

Dry and wet tire model and parameter update along with a significant reduction in tire warmer temperature to 35 C, take it easy on the outlap!

Aerodynamics and ride height measurement points have been re-evaluated, this results in significantly different ride height sensitivities, please review the aero calculator in the garage for more information.

The low downforce package is now only available (and forced to be used) at Le Mans without dive planes fitted.

Collision hulls have been adjusted to coincide with the updated ride height sensor locations at the front and rear of the vehicle plank centreline.

Mass and Inertia properties have been refined to suit a minimum weight of 950 kg.

Engine parameters have been adjusted to suit the new lower rev limits of 8000 rpm for 1st - 5th gears and 8500 rpm for 6th gear.

Shift lights have been adjusted to suit.

Gearbox shift timings have been updated and the short stack gear option has been removed.

Increased range of differential ramp options (inverse ramp angle options are now available for increased flexibility).

The brake system has been refined with new brake pad definitions and the addition of optional master cylinder options.

Suspension geometry has been refined and setup options simplified while retaining similar overall functionality. Bump rubber gaps are now only adjustable on the third elements while both linear and non-linear third element options are now available.

Power steering option range has been reduced to 1-5 in line with the vehicle technical manual, note, the P/S assist steps remain the same as before and the total level of assistance remains similar.

Damper ranges have been expanded to provide increased fidelity.

Garage setup options, tech tips and layout have all been revised to suit.

Pitstop refueling time has been adjusted to meet IMSA '24 rules, front dive planes and rear wing angle are now pitstop adjustable.

Fixed an issue where the front tires could disappear when viewed from some cockpit cameras.

iRacing setups have been updated, please read the setup notes tab for further setup information.

Dirt Late Model

For the damage model, the front suspension hyperextension limits have been reduced and rest deflection has been adjusted.

The suspension system on opponent vehicles has been updated to move in alignment with their matching actual player car.

iRacing setups have been updated.

Dirt Micro Sprint Car

iRacing setups have been updated.

Dirt Midget

iRacing setups have been updated.

Dirt Mini Stock

Improved the alignment of engine RPM lights across the Simulator, D-Box, and external hardware/displays.

iRacing setups have been updated.

Dirt Modified

The suspension system on opponent vehicles has been updated to move in alignment with their matching actual player car.

Dirt Sprint Car

iRacing setups have been updated.

Dirt Sprint Car Non-Winged

iRacing setups have been updated.

Dirt Street Stock

iRacing setups have been updated.

Dirt UMP Modified

The suspension system on opponent vehicles has been updated to move in alignment with their matching actual player car.

iRacing setups have been updated.

Ferrari 499P

NEW CAR!

The Ferrari 499P, a new Sports Car, is now available for racing!

- - Sports car racing fans from around the world rejoiced when Ferrari unveiled its 499P prototype in late 2022. After all, it ended a 50-year absence of factory-backed Ferrari prototypes competing at the sport's highest level—and the brand celebrated its return by adopting 50 as its flagship car number in the process. The 499P quickly established itself as a global force to be reckoned with, winning Le Mans on its first try in 2023 and going back-to-back the next year as well. As with other top-tier prototypes competing in the world's major global series, the 499P is powered by a 671 horsepower twin-turbo hybrid motor. Weighing in at just 1120 kg, drivers will quickly cycle through its seven-speed sequential paddle shift to find top speed at long straightaways like those on the famed French circuit. Any driver who can find the limits of the 499P is among the best of the best in sports car racing, whether real or virtual.

Purchase the Ferrari 499P from the iRacing store today!

AI Drivers are fully trained for racing with this vehicle!

This car is rain-racing ready!

- - This car has a separate rain tire set, optimized for performance in the wet.

FIA F4

For the damage model, some friction parameters have been adjusted.

The damper tooltip in the Garage has been updated.

iRacing setups have been updated.

Formula Vee

This car is rain-racing ready!

- - Tires have been updated to suit wet conditions.

Identified and removed an idle background noise.

Global Mazda MX-5

The AI version of this car has improved its tire temperature modeling, making it more accurate and comparable to a player-driven car. This improves AI Drivers’ accuracy and performance, especially at extreme temperatures.

Indy Pro 2000 PM-18

iRacing setups have been updated.

Late Model Stock

Aerodynamic parameters have been updated.

The bottom of the engine frame has been raised slightly to help reduce the impact of bottoming.

iRacing setups have been updated.

Legends Ford '34 Coupe

iRacing setups have been updated.

Lotus 49

Speed references to the gear calculator in the garage have been added to make ratio selection easier.

iRacing setups have been updated.

Lotus 79

Tire parameters have been updated.

iRacing setups have been updated.

McLaren 720S GT3 EVO

2025 Season 1 Balance of Performance changes: Fuel consumption rate has been increased slightly, and tire parameters have been modified slightly.

Rear suspension droop has been reduced and previous setups are now obsolete.

iRacing setups have been updated.

Mercedes-AMG W12 E Performance

Rear droop has been reduced slightly.

Mini Stock

When racing on dirt, tire wear rate has been reduced.

Improved the alignment of engine RPM lights across the Simulator, D-Box, and external hardware/displays.

Engine power audio levels have been tuned.

Modified - SK / NASCAR Whelen Tour Modified

(BOTH) - iRacing setups have been updated.

NASCAR Cup Series Next Gen Ford Mustang

Fixed an issue where the splitter could appear misaligned.

Porsche 911 GT3 Cup (992)

iRacing setups have been updated.

Porsche 911 RSR

Fixed an issue where the digital display was not being self-lit.

Porsche 963 GTP

Rain tire parameters have been updated.

Aerodynamic properties have been updated.

Updated the textures for static wheels.

Radical SR10

iRacing setups have been updated.

Ray FF1600

iRacing setups have been updated.

SCCA Spec Racer Ford

Vehicle parameters have been updated, including: updated tires, increased engine braking, smaller steps between anti-roll bar adjustments, updated dampers based on real-world data, and a new yaw-based aerodynamic sideforce model has been added.

Minimum tire PSI has been increased to 19 from 17.

Garage options have been split into separate Tires and Chassis tabs.

iRacing setups have been updated.

Silver Crown

iRacing setups have been updated.

SRX

Brakes are now adjustable during Fixed Setup sessions.

iRacing setups have been updated.

Supercars Chevrolet Camaro Gen 3

NEW CAR!

The Supercars Chevrolet Camaro Gen 3, a new Sports Car, is now available for purchase and racing!

- - Supercars has been Australia's premier touring series since the mid-1990s, gathering a passionate and devoted worldwide following over decades of close and exciting racing. Supercars' Gen 3 regulations were first announced in 2020 before making their debut in time for the 2023 season. The new regulation set was a completely clean slate for the series, intended to cut costs, increase road relevance for manufacturers, and create closer racing with cars that were more challenging to drive. With the phase-out of the Holden brand in Australia, General Motors elected to replace the tenured Commodore model with the Chevrolet Camaro ZL1 as the brand's Supercars Gen 3 flagship. It marked the first time that Chevrolet had competed in the Supercars era, but the switch quickly paid off as Shane van Gisbergen gave the car its first win in its second race at Newcastle. That victory kicked off a 15-race winning streak for the Camaro on the way to Chevrolet's first Supercars manufacturer's title; the brand would repeat the feat in 2024, while Brodie Kostecki and Will Brown would give it back-to-back driver's titles.

Purchase the Supercars Chevrolet Camaro Gen 3 from the iRacing store today!

AI Drivers are fully trained for racing with this vehicle!

This car is rain-racing ready!

- - This car has a separate rain tire set, optimized for performance in the wet.

Supercars Ford Mustang Gen 3

NEW CAR!

The Supercars Ford Mustang Gen 3, a new Sports Car, is now available for purchase and racing!

- - Supercars has been Australia's premier touring series since the mid-1990s, gathering a passionate and devoted worldwide following over decades of close and exciting racing. Supercars' Gen 3 regulations were first announced in 2020 before making their debut in time for the 2023 season. The new regulation set was a completely clean slate for the series, intended to cut costs, increase road relevance for manufacturers, and create closer racing with cars that were more challenging to drive. Ford's signature Mustang became its Supercars model of choice in 2019, and its use in the series continued into the Gen 3 regulation set. The all-new Gen 3 Mustang won the first race of the new era at Newcastle with Cameron Waters in 2023, and capped off that season with four wins in a row at Surfers Paradise and Adelaide. Chaz Mostert led the Ford brigade in points in the car's first two seasons, with a sweep of Sydney SuperNight in 2024 a highlight on the way to third in points that season.

Purchase the Supercars Ford Mustang Gen 3 from the iRacing store today!

AI Drivers are fully trained for racing with this vehicle!

This car is rain-racing ready!

- - This car has a separate rain tire set, optimized for performance in the wet.

Super Formula Lights

iRacing setups have been updated.

Super Formula SF23

ReTime has been increased to 120 seconds when running at Fuji International Speedway and Mobility Resort Motegi, per 2024 regulations.

Fixed an issue where wing angle was not getting reset to the default value between loading setups.

iRacing setups have been updated.

Super Late Model

For the damage model, the front suspension hyperextension limits have been reduced and rest deflection has been adjusted.

iRacing setups have been updated.

USF 2000

iRacing setups have been updated.

Williams FW31

AI Drivers are now fully trained for racing with this vehicle!

TRACKS:

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Atlanta Motor Speedway

(Oval) - Added a Safe Entry Rule for pit road so cars must approach pit road using the apron in Turns 3-4.

(Oval) - The pit-in Whelen Light has been relocated to its new home at the entrance of Turn 3.

Brands Hatch Circuit

(Rallycross) - A barrier has been added to the Joker exit to prevent some drivers from merging too early and earning a 2 lap penalty.

Chili Bowl

Fixed an exploit where racers could cut through the pit lane without receiving a Course-Cut penalty.

Circuit des 24 Heures du Mans

A "1x" for having 4 wheels off of the racing surface has been added to the exit of Turn 8, and the slowdown checkpoints have been extended to the edge of the gravel.

As part of the Dynamic Track Debris Refresh project, Circuit des 24 Heures du Mans is pioneering a new technique where we manually deposit appropriate debris on the track before an event begins. This adds a new layer of realism to races at this track!

Some cones have been removed from the testing strip.

Circuit de Barcelona-Catalunya

(Rallycross) - Fixed a tire barrier that would spawn partially on the track surface.

(Rallycross) - The Start/Finish and Joker trusses are now solid objects. Watch out!

Circuit Park Zandvoort

Fixed an issue where several catchfences were only part of the spirit world and lacked a corporeal form.

Circuit de Spa-Francorchamps

Some giant trackside helmet objects have been moved.

The slowdown penalty duration for cutting the bus stop has been increased.

(Bike) - Fixed a critical loading failure issue with this track.

(Bike) - Fixed an issue where drivers could get a Slowdown penalty for simply driving normally at this track configuration.

Updated the track location to correctly indicate the province of Liège, Belgium.

Daytona International Speedway

Fixed an issue where speeding in the pits penalties could be avoided by speeding on the grass nearby instead!

Homestead Miami Speedway

(Road Courses) - Some gravel traps have been removed, and a new paved run-off area has been added.

Hungaroring Circuit

Revised extended surface types which should fix inconsistent 1x behavior. All paved runoffs should now give a 1x when all 4 tires cross the white line or back edge of curbing.

Huset's Speedway

NEW TRACK!

A new dirt oval track, Huset’s Speedway, is now available for purchase and racing!

Named after farmer and businessman Til Huset, Huset's Speedway was built in 1953 and opened the next year. As with so many of America's premier dirt ovals, the track was built out of former farmland—in this case, a soybean field—and has hosted many of the top national series in the country, including the World of Outlaws Sprint Car Series. After a brief stint as the Badlands Motor Speedway in the mid-2010s and subsequent closure, the track was rescued in the summer of 2020 by Tod Quiring, who returned top-level sprint car racing to the South Dakota circuit quickly thereafter. Huset's Speedway measures in as a high-banked, 1/3 mile bullring. It typically hosts both weekly and national level racing through Labor Day weekend. The Huset's High Bank Nationals and Huset's Hustle for sprint cars each offer six-figure payouts to their winners, while the Silver Dollar Nationals pay $75,000 to win for top late model racers. Adding to the track's prestige, Quiring also prominently displays the Huset's brand on his Big Game Motorsports 410 Sprint Car on the World of Outlaws national tour, where he and driver David Gravel have teamed up for dozens of checkered flags in recent seasons.

Purchase Huset’s Speedway from the iRacing store today!

Night lighting is fully enabled at this track!

Indianapolis Motor Speedway

(Oval & Open Wheel Oval) - Tightened checkpoints and rules tab regarding pit exit.

(Oval & Open Wheel Oval) - Images have been added to the Rules tab to show the limits of the pit exit access road.

Iowa Speedway

Fixed an issue where an antennae was not rendering correctly at a distance.

Knockhill Racing Circuit

(Rallycross) - Updated the surface type for the pit lane.

(Rallycross) - Fixed an issue where race control was handing out penalties that could not be served. Brutal!

Misano World Circuit Marco Simoncelli

A bigger slowdown penalty has been added for blasting through the gravel in the Turn 1-3 complex.

New Hampshire Motor Speedway

This track has received a full-scale art overhaul and has been updated to match the 2024 real world appearance. Buildings, track-side objects, and decorations have been updated. Trees, shrubs, and 3D foliage have all been updated and added. All textures, shaders, and lighting have been updated to our current artistic standards.

Track surface bumpmap has been regenerated.

AI Drivers are now fully trained for racing at Road Course, and Road Course with North Oval!

(Legends) - Maximum starters has been increased to 24.

Oulton Park Circuit

Updated Turn 3 Off-Track penalty to be more lenient.

Phoenix Raceway

Some yellow line textures have been updated, removed an errant white line in the dogleg, and removed an obsolete banner.

Road America

The 3D Foliage System has been seeded at this track!

Road Atlanta

The 3D Foliage System has been seeded at this track!

Rudskogen Motorsenter

3D Foliage has been seeded at this track!

Sachsenring

Barney, Legendary Flagman, has finally arrived at this track! We suspect he just needed a short vacation, and what better way to spend it than touring the German countryside.

Slinger Speedway

A duplicate imposter Barney, Legendary Flagman, has been exiled from this track. There can be only one!

(Figure Eight) - Fixed an issue where Barney, Legendary Flagman, appeared to be leaning on an invisible object.

Thruxton Circuit

NEW TRACK!

A new asphalt road track, Thruxton Circuit, is now available for purchase and racing!

Hampshire, England's Thruxton Circuit traces its history back to 1950, when the former RAF Thruxton airfield-home base for many key Allied efforts during World War II-first saw use in motorcycle races. The main circuit was established in 1968, following the outline of the airfield's perimeter road. It currently hosts major British touring car and superbike events each summer, as well as series like the F4 British Championship and TCR UK. Befitting a circuit built around active runways, Thruxton is known as “The Fastest Circuit in the UK.” A lap of Thruxton features just 12 turns in its 3.793 km (2.356 mile) layout, and few of them are particularly sharp. While its race lap record is still over a minute, owing to the levels of racing it typically hosts, there's potential for a much faster time in higher-class equipment with its gradual curves. Damon Hill turned a lap of 57.6 seconds with an average speed of over 147 miles per hour in his Williams FW15C in 1993 that serves as the unofficial track record.

Purchase Thruxton Circuit from the iRacing store today!

AI Drivers are fully trained for racing at this track!

Watkins Glen International

Track surface bumpmap has been regenerated.

Fixed two uneven curbs near an asphalt patch on the inside of Turn 2 and Turn 4.

Bus Stop brake markers have been adjusted so they no longer clip into the ARMCO barrier.

Pit-in light has been moved to match the real world location: across from the pit-in timing line.

Turn 8 brake markers have been nudged up slightly so they can be seen better.

The 3D Foliage System has been seeded at this track!

The Start/Finish line logo has been updated with the correct black background.

Some track marshals have been excised from solid objects.

Turn 1 brake markers have been nudged so they connect with the fence nicely.

A missing rain drain has been added to the exit of Turn 8.

[Legacy] Phoenix Raceway - 2008

(Dirt Road) - Grounded some floating tire bundles.

(Dirt Road) - Fixed the display name of this track configuration in the Simulator.

(Rallycross) - Fixed an issue where a tire barrier near the exit of the Joker Lap would fall through the world when the Simulation finished loading.

(Rallycross) - Fixed a display issue with this track name in the Simulator.

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2025 Season 1 Release Notes [2024.12.09.03] Print

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2025 Season 1 Release Notes [2024.12.09.03] Print

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