This Patch Release contains updates and fixes for the 2025 Season 2 Release.



Anti-Cheat- The “InstallEOSAntiCheat.bat” batch file will now always install/repair the Anti-Cheat system for iRacing, regardless of if it thinks it's already installed.

Race Control- The Connection Black Flag system has been updated with slightly increased sensitivity, improved accuracy, and slightly reduced spotter messaging frequency.
- - These changes have been made after collecting and analyzing extensive data from your racing sessions!

Tire Model- Fixed an issue where tire set limitations of all types were not being scrapped once a Session was declared Wet. This was an issue for both Race Rules restrictions and Tire Set restrictions.

Telemetry- Removed the leading zero on Safety Ratings in the Session string.



<Car Class> ARCA Series Class Cars- iRacing setups have been updated.

<Car Class> NASCAR Cup Series Next Gen Class Cars- For the damage model, the rear panels have been strengthened slightly.

<Car Class> NASCAR Truck Series Class Trucks- Fixed an issue where damage to the front-end was causing aero balance to incorrectly shift forward. It now correctly moves rearward.

<Car Class> Supercars Gen 3 Series Class Cars- Increased the aero balance shift caused by sustaining front-end damage

BMW M2 CSR- Upshifting has been improved to be a bit smoother.



Homestead Miami Speedway- Fred, Flawless Wheelman, has been retrained to avoid driving straight through the extended wall at pit entry with the pace car.
- Fixed an issue where some fans were so loyal that they would remain floating in the sky, even if the grandstands were removed via object details settings.

Mount Washington Auto Road- Fixed an issue where the “Are You Afraid of The Dark?” Award was not being granted properly.

Road America- The barn has been updated with a silo and new banner ads.

This Patch Release contains updates and fixes for the 2025 Season 2 Release.



Graphics

• Fixed an issue where some graphical artifacts could appear on carbon fiber surfaces in the cockpit.
  
• Fixed a rare simulator crash issue that could occur during texture allocation in memory.

Spotter/Crew Chief

• Updated Spanish spotter calls.

<Car Class> ARCA 2025 Series

• Performance penalties for damaged rear wheel states have been significantly increased.

<Car Class> GT4 Class Cars

• Fixed an issue where the LF tire would take much longer to change than the other three.
  
• - - Total time to change all four tires remains the same as before.

<Car Class> Supercars - Gen 3

• Fixed an issue where damaged aerodynamics were incorrectly adding downforce.
  
• Aerodynamic damage penalties and repair processes have been updated.

Dirt Late Model

• (ALL) - Fixed an error in metric/imperial conversions for some values displayed in the garage, including Packer, Deck height and J-Bar heights.

Dirt Modified

• (Both) - Fixed an error in metric/imperial conversions for J-Bar heights.

Dirt Micro Sprint Car

• (ALL) - Fixed an error in metric/imperial conversions for stagger and wheel spacing.

Dirt Midget

• Fixed an error in metric/imperial conversions for wheel spacing.

Dirt Sprint Car

• (ALL) - Fixed an error in metric/imperial conversions for wheel spacing.

Dirt Sprint Car Non-Winged

• (BOTH) - Fixed an error in metric/imperial conversions for wheel spacing.

Dirt UMP Modified

• Fixed an error in metric/imperial conversions for J-Bar heights.

Global Mazda MX-5 Cup

• Aerodynamic damage penalties and repair processes have been updated.
  
• - - The drag and aerodynamic penalties for damaged versus detached pieces have also been tuned.

[Legacy] Dallara IR-05

• Fixed an issue where the nose front wing would not be repaired or replaced correctly during pitstops.

• This Patch Release contains updates and fixes for the 2025 Season 2 Release.
  
• This Patch Release also includes the new feature, Adaptive AI Racing for Single AI Sessions!

Simulation

AI Racing

• Adaptive AI is now available for Single AI Sessions!
  
• - - Adaptive AI is an all new system that provides each iRacer an AI Racing experience that's tuned to their individual preferences and desired level of challenge. Rather than tuning difficulty percentages, with Adaptive AI users choose whether they are looking for a Low, Medium, or High level of challenge. This experience is dynamic and tuned to each iRacer, so one racer's Low might be another racer's Medium. While Adaptive AI is built for iRacers of all abilities, it does have a sweet spot and it's possible that some of our fastest racers might exceed the pace that the system can provide. As with all iRacing systems, Adaptive AI will continue to evolve and improve as we collect and incorporate iRacer feedback.
  
• - - Adaptive AI will make its debut in Single Race, with a follow-up planned for Hosted iRacing and AI Seasons at a later date.
  
• AI Drivers have improved their racing lines at USA International Speedway.
  
• AI Drivers have improved their racing skills with the NASCAR Truck Series Class Trucks.

Physics

• The physics processing for collisions involving opponent vehicles has been updated for improved accuracy.
  
• - - Opponent cars now automatically update their physics processing frequency to a much higher rate any time they detect they are in close proximity to any object, or whenever a collision occurs.
  
• - - - - This alleviates an issue where opponent vehicles could sometimes appear to snag on walls, climb up objects, or trigger other visual oddities.
  
• - - Torque scaling applied during impacts to wheels has also been adjusted. Opponent vehicles now behave much more realistically when striking walls with their wheels.

Dynamic Track Model

• Updated the appearance of dynamic track debris within the space tangential to the track surface.
  
• Fixed an issue with normal mapping of track debris, making their visible bumpiness more correct.

Graphics

• Lighting exposure intensity for when the sun is within 15 degrees of the horizon has been reduced.
  
• Improved the brightness of pit entry/exit lights and caution lights, especially at sunset.
  
• Improved brightness in foggy, rainy, and overcast conditions.
  
• The lighting gradient at the horizon line has been improved.
  
• Improved the appearance of fog over terrain surfaces and in mirrors.
  
• Improved MSAA processing for foggy conditions.

Spotter/Crew Chief

• For Autofuel, fixed an issue where fuel usage data could sometimes become invalid between sessions. Additionally, if invalid fuel data leaks into the autofuel system, it will now be discarded and the system will be reset instead of corrupting future data.
  
• Some Foreign Language Spotter Packs have been updated.

User Interface

• Fixed an issue where the training Race Line was always white, instead of color-coded to indicate braking and acceleration zones.

Cars

<Car Class> ARCA 2025 Series

• For custom paints, a headlight has been moved to the decal layer, so custom paints may once again stamp numbers over them.
  
• For the damage model, friction parameters have been increased on the tire and rim sidewalls to prevent any benefits from wall-riding.

BMW M2 CSR

• Fixed an error where the left-front tire change always required an additional 5 seconds. This tire changer has been re-assigned to a new job more befitting his talents.

NASCAR Cup Series Chevrolet Camaro ZL1

• Fixed an issue where the shadow of this car was incorrect.

Tracks

Circuit des 24 Heures du Mans

• Fixed an issue where some sausage curbs had a tasteless inverted texture.

Darlington Raceway

• Some advertisements have been updated.

Oulton Park Circuit

• Fixed the super secret off-track error at the Turn 3 exit.

Sebring International Raceway

• Removed a troublesome tire bundle from Turn 3.

This Patch Release contains updates and fixes for the 2025 Season 2 Release.


Simulation

Dynamic Track Model

• Fixed an issue where track debris was very difficult to see at a distance.
  
• Fixed an issue where the visual effects for track debris were not displaying an appropriate amount - it would appear as though less debris was present than actually was.
  
• Updated the appearance of track debris based on the viewing camera angle.
  
• Track debris rubber marbles have been adjusted for improved visibility.
  
• Improved the visuals for gravel debris particles.

Graphics

• Solar flare intensity has been reduced. We still do not recommend staring into the sun.
  
• Updated solar flare coloration and brightness.
  
• Improved specular map behaviors for some older environment objects.
  
• Reduced the reflectivity for a variety of smooth and shiny objects.
  
• Improved the lighting exposure during rainy and foggy conditions.
  
• The sharp MSAA filtering process has been expedited and improved - artifacts should no longer occur at extreme intensities.
  
• Reduced the specular lighting intensity for dirt and oval track surfaces.
  
• Reduced flickering that could occur in very bright HDR pixels while using MSAA.
  
• Fixed the lighting on rain particles and rain sprays in all conditions, but mostly at night.
  
• Several trees that were extra bright at Sebring night and some other tracks have been improved.
  
• Fixed an issue where some tire skid marks without nearby lighting were eerily glowing in the dark.
  
• Fixed an issue where tire marks made at night during wet weather would appear extra-bright.
  
• Fixed an issue where vehicle headlights were not illuminating tire smoke correctly.

Spotter/Crew Chief

• Some spotter packs have been updated.

Autofuel

• Fixed an issue where the Spotter could incorrectly inform you that you had insufficient fuel at the start of an event.

Cars

<Car Class> ARCA 2025 Series

• Various manufacturer art elements are now locked in the paint templates for these cars.

Ferrari 499P

• Fixed an occasional issue in which the low fuel level warning can falsely trigger when entering the car with a nearly full fuel cell.

Formula Vee

• Dashboard ambient occlusion has been updated.

Ray FF1600

• Footwell has been darkened.

Tracks

Charlotte Motor Speedway

• Fixed an issue where a pit exit wall was painted with glow-in-the-dark paint, and would eerily glow bright green at night.

Darlington Raceway

• Fixed several objects that would pop into view as the camera changed distances from them.
  
• Track surface coloring has been updated.
  
• Hedges have been updated.

Homestead Miami Speedway

• Fixed several objects that would pop into view as the camera changed distances from them.

Iowa Speedway

• Musco lights have been updated.
  
• Fixed several objects that would pop into view as the camera changed distances from them.

Kansas Speedway

• Hedges and signs have been updated.
  
• Crowd and fence textures have been updated.

Las Vegas Motor Speedway

• Fixed several objects that would pop into view as the camera changed distances from them.
  
• Some grandstand textures have been improved.

Lime Rock Park

• Additional crowds have arrived at this track.

Portland International Speedway

• Fixed several curb issues.
  
• Fixed an issue where the brake markers were not visible at far camera distances.
  
• Brake markers have been updated to always draw at all camera distances and graphics settings.

Slinger Speedway

• Track surface texture roughness and colors have been rebalanced and skid mark textures have been updated.

Sonoma Raceway

• A flagpole has been updated.

Thruxton Circuit

• Fixed a color issue with a section of the Seagrave corner.

This Patch Release contains updates and fixes for the 2025 Season 2 Release.


Simulation
Updater
- Fixed an issue that could occur when installing updates where the updater needed to be closed to continue to use iRacing, fixing an infinite updater loop.

AI Racing
- AI Drivers are now ready to drive the new ARCA Class Cars! This includes all three of the brand new ARCA Cars released for 2025 Season 2!
- - ARCA Chevrolet SS
- - ARCA Ford Mustang
- - ARCA Toyota Camry
- AI Drivers have improved their standing start behaviors and are less likely to cook their rear tires, lose all rear grip, and spin out.

Graphics
- Fixed a critical issue where dynamic track debris was completely invisible.
- Improved lighting effects on crowds at night.
- Improved lighting effects and visibility of windshield glass.
- Improve a visual pop that can be seen on grandstands at day/night transitions.
- Improved some specular texture issues that could appear on track and environment terrains when the sun at low angles could cause some blowout.
- Fixed an issue where helmet visors were flashing white when they had dirt on them at night.
- Fixed an issue where windshield dirt and dust streaks were rendering extremely reflective and bright.
- Fixed an issue where some environment objects were defaulting to the wrong shaders and would appear pure black.
- Fixed some issues with ambient lighting on trees, where some trees could appear bioluminescent in certain conditions at night.
- Fixed an issue where some fences would not render correctly in high amounts of haze at low or medium shader detail.

Weather
- Fixed an issue where 100% humidity (low fog) was causing the exposure to be too dark when skies were also clear.


Cars
<Car Class> ARCA 2025 Series
- Brake rotor glow has been enabled.

<Car Class> GTP Series
- - Fixed an issue where ARB settings that did not match the setup in use could be loaded into a Fixed Setup Session.
- ARB adjustment during cornering is now less restrictive.

ARCA Ford Mustang
- Fixed an issue with a decal logo being incorrectly mirrored on one side of the car.

Acura ARX-06 GTP
- iRacing setups have been updated.

BMW M Hybrid V8
- iRacing setups have been updated.

BMW M8 GTE
- The Dashboard Box rev lights have been updated for accuracy.

Dallara IR18
- iRacing setups have been updated.

Dallara P217
- Fixed an issue where the shift light lamp was too large.
- Fixed an issue where the bumper was too shiny at certain camera distances.

FIA F4
- The Dashboard Box rev lights have been updated for accuracy.

Hyundai Elantra N TCR
- Fixed a grammatical error in an iRacing setup.

Late Model Stock
- The car decals texture layer of the paint template has been updated.

Legends Ford '34 Coupe
- iRacing setups have been updated.

NASCAR Cup Series Ford Mustang
- Fixed a critical issue with fields in the Garage screen overlapping, making them unusable.

Porsche Mission R
- iRacing setups have been updated.

Ray FF1600
- Fixed an art issue where the suspension hub pivots were misaligned.

Ruf RT 12R RWD
- iRacing setups have been updated.

VW Beetle Lite
- Fixed an issue where opponent cars could appear to have a bad setup applied.

[Legacy] Porsche 911 GT3 Cup (991)
- Speedometer calculation has been updated for accuracy.

[Legacy] Porsche 911 GT3 R
- The in-Simulator name for this car has been updated.


Tracks
Cadwell Park Circuit
- A floating marshal hut has been earthbound.

Chili Bowl
- Fixed an issue where this track was being overexposed during day-time races.

Darlington Raceway
- Fixed some visual popping of objects as the camera changed distances from them.
- A missing retaining wall has been added.
- Additional crowds have arrived at buildings and bleachers.
- Additional visitor vehicles have arrived.
- Some fences have been mended.

Dover Motor Speedway
- The textures for the casino have been improved.

Homestead Miami Speedway
- Some pit road buildings have been updated.

Kansas Speedway
- Additional visitor vehicles have arrived.

Las Vegas Motor Speedway
- Fixed some visual popping of objects as the camera changed distances from them.
- Crowds have arrived in the grandstand tower.
- Improved night lighting for objects and terrain at this track.

MotorLand Aragón
- Fixed an issue where a tire barrier in Turn 8 was incorporeal.

New Hampshire Motor Speedway
- Some track surface textures and skid mark textures have been improved.

Oswego Speedway
- Some track surface textures and skid mark textures have been improved.
- Some terrain textures have been updated.

Portland International Speedway
- Fixed an issue with some gain-time checkpoints at Turn 10.
- Some rock models have been updated.

Rudskogen Motorsenter
- Fixed an issue where some rocky areas could render pure black at low sun angles.

Sebring International Raceway
- Treeline shaders have been updated.

Talladega Superspeedway
- Halo support has been added to the pit-in light.

The iRacing 2025 Season 2 Release Build has rolled up to the starting line! This release has new content, features, improvements, and fixes for 2025 Season 2, which officially starts on March 18th at 0000 UTC! The iRacing vehicle garage expands with three new bays for three brand new ARCA Series racecars: ARCA Chevrolet SS, ARCA Ford Mustang, and ARCA Toyota Camry. The Legends Ford '34 Coupe has received a stem-to-stern performance and physics overhaul, with a few art updates and all-new audio for good measure. The iRacing landscape also grows with the addition of Portland International Raceway. The Track Art Team has also completed multiple full art overhauls of SEVEN classic NASCAR tracks including: Bristol Motor Speedway, Darlington Raceway, Dover Motor Speedway, Homestead Miami Speedway, Iowa Speedway, Kansas Speedway, and Las Vegas Motor Speedway.

We are excited to launch the Official Series Redesign, which transforms the way you can browse, learn about, and join Official Series within iRacing - the new full-page layout provides more space and more info than ever before. A new Connectivity Black Flag system has been implemented, which will place participants with connections that are detrimental to others in a type of time-out until their connection quality reaches a satisfactory level. The track debris refresh system has been expanded with the addition of informative local course debris caution flags. The new Adaptive AI Difficulty system is almost ready to debut with this initial release, but we have decided it needs a bit more time in the oven to get extra crispy. With this system, AI Drivers' racing skill will automatically adjust during the event based on the driver's lap times to keep the racing exciting. This feature will be released during a 2025 Season 2 Patch.

Our vehicle engineers have completed work on updates to the GTP Class Cars and the LMP2 tires, providing substantial improvements to the changes from 2025 Season 1, ultimately resulting in greater realism. The Ray FF1600 has received an improved suspension geometry model, which improves accuracy across all four contact points and will be the pioneer for changes to other vehicles to come. Six additional tracks have been updated with the 3D modeled curb system (with more coming soon), making the racing experiences there more real-to-life than ever. The entire iRacing Simulator has also received significant lighting updates that transform the appearance of cars and tracks.

The Legends Ford '34 Coupe has been updated to be water-ready and may now equip rain tires. The updates to this car have been so substantial this season that the Legends Ford '34 Coupe - Rookie car is being retired. AI Drivers have received updates for a variety of rain racing tracks and have adapted to the updated NASCAR tracks that now feature SAFER barriers. The Dallara iR-01 and seven new track configs, including Portland International Raceway, are AI-racing ready. Finally, our vehicle dynamics team has recalibrated hundreds of vehicle setups to take advantage of the gamut of changes to all cars included in this release. Get ready to jump into all that the 2025 Season 2 has to offer!


Season highlights include:

• ARCA Chevrolet SS
  
• ARCA Ford Mustang
  
• ARCA Toyota Camry
  
• Legends Ford '34 Coupe vehicle overhaul
  
• Portland International Raceway
  
• SEVEN NASCAR Track Art Overhauls (Bristol Motor Speedway, Darlington Raceway, Dover Motor Speedway, Homestead Miami Speedway, Iowa Speedway, Kansas Speedway, and Las Vegas Motor Speedway)
  
• SIX Tracks with New 3D Curbs (Circuito de Jerez - Ángel Nieto, Kansas Speedway, MotorLand Aragón, Rudskogen Motorsenter, Sandown International Motor Raceway, and Winton Motor Raceway, with more coming soon.)
  
• Official Series Redesign
  
• Connection Black Flag
  
• Local Course Debris Cautions
  
• Universal Lighting Updates
  
• GTP and LMP2 Tire Updates
  
• Ray FF1600 4-Bar-Linkage Suspension Model
  
• The Legends Ford '34 Coupe is Rain-Ready!
  
• AI Racing with the Dallara iR-01
  
• AI Racing at Portland International Raceway (both configs), Daytona International Speedway - NASCAR Road Course, Moto, & Short, and Mid-Ohio Sports Car Course - Chicane & Short
  
• Hundreds of meticulously improved new iRacing vehicle setups

Visit our 2025 Season 2 features page here: https://www.iracing.com/seasons/2025-s2/


Full 2025 Season 2 Release Notes can be found on the iRacing Forums here:
https://forums.iracing.com/discussion/75906/2025-season-2-release-notes-2024-03-10-03#latest

This is a Vehicle Telemetry Update, containing a new anonymized race data telemetry collection system.

• iRacing has implemented an additional, anonymized telemetry system that we will be using to power future improvements and features for the iRacing Simulation.
  
• - This additional telemetry system is separate and distinct from the current telemetry used by Atlas, Motec and other 3rd party applications. No changes are required for 3rd parties using the existing telemetry system as it is not changing.
  
• Race data telemetry is generated automatically while drivers are participating in select Official Series. Series with vehicle data telemetry collection enabled will be identified. After a driver exits the Session, the telemetry data they generated will be automatically, and securely, collected by iRacing.
  
• Members may opt-out of participating in the vehicle telemetry data collection process if they wish, and telemetry data is only collected from participants with the user preference enabled who participate in specific Official Series, which will be identified.
  
• - Members may opt-out by selecting to do so on the Settings > Preferences page.
  
• This system will be enabled in select Official Series, beginning with a new Week 11 Series: iTested Series
  
• - We encourage participation and entrants will be awarded the seldom-offered “iTested!” Award for participating!

This is a Patch Release, containing updates, improvements, and fixes for the 2025 Season 1 Release.


Anti-Cheat
- The antiquated versions of EasyAntiCheat (Kamu EAC) files have been renamed and relocated in the iRacing file structure to prevent confusion with the currently active and in use Epic Game EasyAntiCheat (EOS) version of Anti-Cheat software.
- Some additional steps have been taken to remove the previous generation of the AntiCheat system used by iRacing (Kamu/EAC).
- - The iRacing Updater will now ask you if you want to uninstall the old Kamu/EAC derivation of EasyAntiCheat, if you happen to still have it installed and it is associated with iRacing (Game 36). If when prompted you choose "No", it won't ask again in the future. Also note that the old Kamu/EAC installer, and our .bat script that uses it, have been moved to a subdirectory, to distinguish it as being "old" and obsolete.

Race Servers
- Made a change to how the scheduler creates Open Practice Sessions.

Race Control
- Fixed an issue where a Lucky Dog driver could be incorrectly forced to give up spots to lapped cars after a delayed green. We now make sure the EOL penalty isn't applied again when entering the "Two to Green" state a second time.
- Consecutive single file restarts is now a value that may be overridden by the admin "!restart" command.
- - The number of laps gap between cautions used by consecutive single file restarts is now admin overridable with: !csf N
- - The default value is 2 laps gap. Acceptable range is 1-10 laps. Setting to 0 will revert to whatever the default setting for the session is (2).
- - Consecutive single file restart behavior will not happen during green-white-checkered laps (GWC), the normal restart type will be used instead.

AI Racing
- AI Drivers have improved their ability to recover from crashes or going off-course during parade laps.

Graphics
- The mip map tossing algorithm has been updated.
- Fixed a compatibility issue with some OpenXR runtime states.
- Fixed an issue for users with 9th and 10th generation Intel CPUs running on Windows 10 who are receiving random Simulator crashes.


<Car Class> GTP
- For the damage model, reduced friction on plank hulls to reduce grounding and snagging.

<Car Class> NASCAR Cup Series Gen 7
- Drafting configurations for running at super speedways have been updated.

Dallara P217
- For the damage model, some material properties have been tuned to reduce sparks from ground contacts.

Dirt Mini Stock
- For the damage model, hyperextension limits have been updated.

Dirt Sprint Car
- (410) - iRacing setups have been updated to suit longer race lengths.

Ferrari 499P
- For the damage model, some parameters for the vehicle plank hull have been adjusted to slightly reduce friction, prevent ground snags on curbs, and reduce bouncing.

Ligier JS P320
- Fixed an issue with some incorrect areas of windshield reflections.

Lotus 79
- For the damage model, some material properties of the sidepod hulls have been updated to reduce sparks.

McLaren 720s GT3 EVO
- For the damage model, slightly increased the break limits for the rear panel.

NASCAR Whelen Tour Modified
- iRacing setups have been updated.

SCCA Spec Racer Ford
- For the damage model, raised the break damage threshold for the rear wheels, and adjusted the bodywork detachment properties to prevent bodywork from bouncing.

Super Dirt Late Model
- iRacing setups have been updated to suit longer race lengths.

Super Late Model
- iRacing setups have been updated.


Circuit de Nevers Magny-Cours
- Added a slowdown to prevent racers from using the pit exit to cut Turn 1.

Huset's Speedway
- Updated the track parameter initializations, which dries and roughs up the apron, making it less tempting to drive on, and fixes an issue where some loose dirt was missing from track initialization.

Kevin Harvick's Kern Raceway
- (Dirt Mini Oval) - Time penalties have been adjusted for racers attempting to gain time below the yellow hose.

Misano World Circuit Marco Simoncelli
- (Grand Prix & Grand Prix 2007) - The slowdown penalty for straight-lining the Turn 1-2 complex through the gravel has been increased.

Silverstone Circuit
- (International) - Added a slowdown to prevent racers from using the runoff in the final corner for extra speed at the start of qualifying.

Sonoma Raceway
- Fixed an issue where the race servers could crash if an event at this track using Short Pace Laps and Rolling Starts included more than 60 participants.

Virginia International Raceway
- (Grand Course & Full Course) - Added a slowdown to prevent racers from buzzing Barney's cousin in the South Course pit lane.

[Legacy] Silverstone Circuit - 2008
- (Grand Prix, Historic Grand Prix, & Southern) - Adjusted slowdown penalty at Club corner.

2025 Season 1 Patch 1 Release Notes [2025.01.08.01]
This is a Patch Release, containing updates, improvements, and fixes for the 2025 Season 1 Release.


Simulation
Anti-Cheat
- Updated the "InstallEOSAntiCheat.bat" script file so that it can be correctly run using right-click > "Run as Administrator". The script will now also pause at the end so you can see its messaging.

Weather
- Fixed an issue where participants joining a Session after it had been initialized could have slightly different track surface water heights in some areas of the track. Differences were minimal, but it could be noticeable when joining an event with a drying track state.

Dynamic Track Model
- For the debris system, adjusted the parameters for vehicle bodies picking up debris, including better accounting for smaller body shapes, pickups being scaled by speed, and implementing a maximum amount of debris for vehicle bodies depending on chassis size.
- For the debris system, improved the ability for debris to adhere and shed from vehicle bodies.
- For the debris system, the algorithms for flinging debris have been updated.
- For the debris system, improved the calculations for generating gravel dust by tires.
- For the debris system, normalized the color for gravel dust to improve its overall tone in all environments.

Dirt Racing
- For Dirt Oval Racing, apron areas should now be a bit rougher to drive on.

AI Racing
- Fixed an issue where AI Vehicles could lose the ability to support MGUK-only driving if the host leaves the Session.

Audio
- Support has been added to XAudio to allow single channel audio hardware, including many Bluetooth headsets.
- The number of sounds that can be loaded by the Simulation has been increased. This provides greater support for third-party sound packs.
- Fixed an issue where the volume selected via the user interface was not being saved to the "app.ini" file.

Pit Lane
- Auto Fuel will not enable itself if a pitstop is in progress. This fixes an issue where it was briefly enabling itself and modifying fuel fill values during driver swaps in team racing.

Spotter/Crew Chief
- The Italian Spotter Pack for Renzo A. Olivieri has been updated.
- Fixed a grammatical error with the spotter message for having major engine power loss.

Active Reset
- Fixed an error in the way detached car parts were being tracked while resetting. Hanging and detached car parts should now be restored correctly to their saved state.


Cars
BMW M2 CSR
- Fixed an issue with the reflectivity of the rollbar and digital display.

Ferrari 499P
- Fixed an issue where reverse wheelspin under braking was incorrectly causing electrical energy regeneration when a single wheel locks up. This fix does not lessen how punishing wheel lockups are, particularly in the wet, but does prevent the motor generator from driving the wheels in the reverse direction.

Ligier JS P320
- For the damage model, the nose hull has been stiffened slightly to prevent submarining on contact.

Porsche 718 Cayman GT4 Clubsport MR
- For the damage model, adjusted the scrape damage progression thresholds for parts of the rear.

Super Formula SF23 - Honda
- For the damage model, a tuning pass has been completed which fixed a pivot-point for the left sidepod hull, increased the hull dilation for the diffuser and floor to help prevent ground snags, slightly lowered floor friction, and slightly strengthened wheels.

Super Formula SF23 - Toyota
- For the damage model, a tuning pass has been completed which fixed a pivot-point for the left sidepod hull, increased the hull dilation for the diffuser and floor to help prevent ground snags, slightly lowered floor friction, and slightly strengthened wheels.

[Legacy] NASCAR Truck Chevrolet Silverado - 2008
- Fixed an issue where dashboard gauges could appear blank/white.


Tracks
Cadwell Park Circuit
- The pit entry tire barrier is now a fully solid object.

Charlotte Motor Speedway
- A floating sawtooth curb at the back chicane has been re-grounded.

Lime Rock Park
- Fixed an issue where some treelines had some excessively dark trees.

Sebring International Raceway
- Fixed an issue where some tire stack objects were the wrong physical size.

This is a Hotfix Release, containing critical fixes and some updates for the 2025 Season 1 Release.



- Fixed a critical issue where custom sectors could not be set with the Active Reset feature.

- Debris particles may now be spawned along the entire width of the tire carcass instead of only in the center of the contact patch.
- Some parameters for gravel, mud, and dust debris have been updated.
- Fixed an issue with the updated debris system where some particles were not allowed to interact with the environment during their lifetime.

- Fixed a critical issue where loose dirt at Dirt Oval tracks was completely invisible in Replay cameras.

- Fixed a critical issue where AI Drivers would refuse to grid for Oval events using Timeline Weather.
- - Developers learned that this was a form of protest by the AI Drivers, and their demands for new umbrellas during their off-track time have been satisfied. AI Drivers will once again race on Ovals when Timeline Weather is selected.

- SSAO processing along shape edges has been improved.
- Fixed some display issues with some of the rear brakelights for Fred's pace cars.
- Fixed an issue where some of the 3D foliage was attempting to divide by zero. Not even Mother Nature can perform such a mathematical impossibility!


- Drafting distances and corresponding effects have been adjusted.

- Fixed an issue where the dashboard gauges could appear blank/white.

- Aerodynamic offsets have been updated.

- Fixed an issue where the paddle shifters would not rotate with the wheel for female drivers.

- Very distant LODs have been updated to correctly hide cockpit interior completely.
- Fixed an issue where pit crew and equipment could have the incorrect colors applied when using an official BMW livery.
- Fixed a texture mapping issue on the left-side fuel windows.
- Fixed an issue where the driver's seat could disappear at certain camera distances.

- Fixed an issue with toe measurements in the garage.

- For the damage model, fixed an issue where too much energy from some vehicle body impacts was being transferred to the engine.

- iRacing setups have been updated.

- Engine sounds for chase and exhaust cameras have been improved.

- For the damage model, reduced the amount of energy damage transferred from the nose hull to the engine.

- For texture mapping, the rear windshield banner has been added, and the grille has been moved to an independent texture.
- The perspective and angle on vehicle mirrors has been adjusted.

- Fixed an issue where the wiper knob rotated incorrectly.

- Fixed an issue where the dashboard gauges could appear blank/white.

- Fixed an issue where headlight flares were appearing in the middle of the car.


- Updated some brakemarkers.

- Some environment textures have been updated.