iRacing News

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.


[h2]iRacing[/h2]

[h3]Anonymized Telemetry Data:[/h3]

• 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.


[h2]Simulation
[/h2]
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.


[h2]Cars
[/h2]
GTP
- For the damage model, reduced friction on plank hulls to reduce grounding and snagging.

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.


[h2]Tracks
[/h2]
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.



[h2]Simulation[/h2]
[h3]Race Control[/h3]
- Fixed a critical issue where custom sectors could not be set with the Active Reset feature.

[h3]Dynamic Track Model[/h3]
- 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.

[h3]Dirt Racing[/h3]
- Fixed a critical issue where loose dirt at Dirt Oval tracks was completely invisible in Replay cameras.

[h3]AI Racing[/h3]
- 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.

[h3]Graphics[/h3]
- 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!


[h2]Cars[/h2]
[h3] Supercars Gen 3[/h3]
- Drafting distances and corresponding effects have been adjusted.

[h3] [Legacy] NASCAR Xfinity Class Cars[/h3]
- Fixed an issue where the dashboard gauges could appear blank/white.

[h3]Acura ARX-06 GTP[/h3]
- Aerodynamic offsets have been updated.

[h3]Acura NSX GT3 EVO 22[/h3]
- Fixed an issue where the paddle shifters would not rotate with the wheel for female drivers.

[h3]BMW M2 CSR[/h3]
- 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.

[h3]Dallara P217[/h3]
- Fixed an issue with toe measurements in the garage.

[h3]Ferrari 499P[/h3]
- For the damage model, fixed an issue where too much energy from some vehicle body impacts was being transferred to the engine.

[h3]Mini Stock[/h3]
- iRacing setups have been updated.

[h3]Ray FF1600[/h3]
- Engine sounds for chase and exhaust cameras have been improved.

[h3]SCCA Spec Racer Ford[/h3]
- For the damage model, reduced the amount of energy damage transferred from the nose hull to the engine.

[h3]Supercars Chevrolet Camaro Gen 3[/h3]
- 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.

[h3]Supercars Ford Mustang Gen 3[/h3]
- Fixed an issue where the wiper knob rotated incorrectly.

[h3][Legacy] NASCAR Nationwide Chevrolet Impala - 2012[/h3]
- Fixed an issue where the dashboard gauges could appear blank/white.

[h3][Legacy] Riley MkXX Daytona Prototype - 2008[/h3]
- Fixed an issue where headlight flares were appearing in the middle of the car.


[h2]Tracks[/h2]
[h3]Mid-Ohio Sports Car Course[/h3]
- Updated some brakemarkers.

[h3]Thruxton Circuit[/h3]
- Some environment textures have been updated.