iRacing 2024 Season 4 Release Notes: New Content & Features

As the iRacing Season 4 2024 is about to be deployed, plenty of changes and new content will arrive. Here are the iRacing 2024 Season 4 pre-release notes.

UPDATE 05/09/2024: The 2024 Season 4 build has been released however the McLaren 720S GT3 EVO is still pending final approval from McLaren. The car may not release in time for Season 4 to begin, we will update this article when the McLaren becomes available.

UPDATE 09/09/2024: The McLaren 720S GT3 EVO is now available to buy on iRacing.

It is that time again as iRacing's current season enters its 'fun week' before swapping over to the next. The new build is set to arrive today September 4, and with it comes plenty of additions in the form of new cars, a new track, and much more.

Here is all the content and changes you can expect with iRacing 2024 Season 4.

New Content​

The headlines are of course the new content, of which there are four new cars and one new track. On the sports car side, there is the McLaren 720S GT3 EVO which will replace the long-since-obsolete MP4-12C GT3 that will be moved to legacy content, and also the brand new BMW M4 GT4 G82 which will replace the outgoing F82 version.

Those who have picked up the MP4-12C GT3 and M4 GT4 F82 may be able to claim credits depending on how recently they bought the cars. If one of these cars was picked up within the past year, a 50% compensation is added to your iRacing credits, whereas it is 75% from 180 days and a full refund within the previous 90 days.


Regarding the new oval cars, the Mini Stock and Dirt Mini Stock which are both available at no additional cost for all players. Then of course, Cadwell Park is the only new track on the build, a tight and undulating track often dubbed as the "mini Nürburgring". But there are some tracks that have been given a new coat of paint.

Both the Belgian racetracks on the sim - Spa and Zolder - look a bit different compared to before. Spa's new renovations which finished in 2022 will be available on the sim for all pre-existing owners of the circuit, with the old version still able to be used. Zolder's update is merely aesthetic, no major changes to layout or run off.

What Else?​

Throughout this week, iRacing are testing a new algorithm distributing drivers based on their iRating in multiclass races to provide for more diversity in car selection within classes and maintaining optimal grouping not just in class but among all classes. For example, previously in Special Events with GTP, LMP2 and GT3 cars, the LMP2 signups were not as large as the other two classes so the disparity between Strength of Field is quite sizeable.

The placement of signups have previously automatically been from the top split and each split at a time before there is no more signups for the class. But the intention of this new algorithm is to be able to have drivers placed with those who are closer to their iRating amongst all classes rather than just their own.

This weekend, there will be a special iTested pseudo-Special Event, a 3-hour race around Charlotte Roval with GT3 and GT4 cars which will be testing the new algorithm. Anyone who completes 50% of the laps will get an iTested Award.


Additionally, there will be a new quick and easy way to load up AI races from the officials tabs so you can practice at your own discretion. Tune in next week when @Angus Martin will be releasing an iRacing AI guide so you can optimise your single player experience, in time for when the career mode launches.

Along with the new McLaren GT3 and BMW GT4, a whole bunch of pre-existing cars can be raced in the rain; the Clio Cup, Mustang FR500S and all the TCR cars. Speaking of rain, there is a new type of rainfall that happens in-sim, Spotty Rain simulates light to heavy scattered showers so it could perhaps rain for mere seconds.

Standing starts have been improved drastically. Cars will now essentially have the temperature in their tyres from having done a formation lap without actually doing one, meaning more grip at the start of races. Then in lone qualifying sessions, it will now be possible to tab over to watch your fellow competitors running laps in the live replay cam.

You can find the full changelog below!

iRacing 2024 Season 4 Changelog​

General​

• The Electron version and dependencies have been updated to the latest stable release versions.

Hosted Racing​

• Up to 14 car models may now be selected when creating a Hosted Session.

AI Racing​

• [pending final testing] A new “Go Racing” drop-up menu option has been added to Official Sessions: “Create a Single AI Session”. This button copies all parameters from the scheduled Official Session and puts you straight into a private AI Session using those parameters. This is a really quick way to see what the event you’re browsing might be like, and test out the car and track in traffic.
• Up to 14 car models may now be selected when creating AI Sessions.
• Fixed an issue where the AI Rosters "Add Pattern" button resulted in an error.
• Improved the error message for inputting an invalid AI Season name.

iRacing Weather System​

• A new Weather Type is now available for selection in Timeline Weather Mode: Spotty Rain.
• - - Spotty Rain simulates heavy to light scattered rain showers in the region throughout the allotted time. Just like real scattered rain showers, this mode results in a well-mixed bag of patches of clouds and sun in varying degrees, accompanied by periodic stints of rain in various levels of heaviness. When Spotty Rain is in use, pay close attention to your weather radar to see what’s on the horizon for your race!
• - - Spotty Rain is only available in Timeline Weather Mode.

Paint Shop​

• Four new sponsors have been added to the Paint Shop, including:
• - - Bell Helmets
• - - Eibach
• - - OMP Racing
• - - Simshop

SIMULATION:​

Official Racing​

• iRacing has developed a new Distributed Splits Algorithm for Multi-Class Official Series that takes vehicle manufacturers and iRating into account for an optimal experience. The new Distributed Splits Algorithm will be rolled out selectively, and there will be an indicator for Series and Events that use it.

Divisions​

• Divisions will no longer be calculated at the Start of Week 1, but instead during Week 13.
• - - With the recent split of the Road License and our drastically increased membership over time, this database process now takes exponentially longer than it did when originally designed. This slow process led to extended Official Series downtime for the Season cut-over last Season. This change will distribute and process this workload while service remains up throughout Week 13 instead of leaving it all for the last minute. The Divisions that result from this altered process will be negligibly different.

Physics​

• Cars using Standing Starts now automatically complete a simulated Parade Lap around the track. This process warms and conditions the tires and heats the brakes, improving the starting experience.
• Natural clutch variance has been added as a feature to iRacing.
• - - All vehicle clutches now have an identical small amount of natural bite variance. The amount is determined randomly at the start of each Session, and all vehicles in the Session have the exact same amount. This variance simulates reality, as not all clutches operate identically time after time, and this change will ensure each Session provides all drivers with a minuscule natural variation to keep the playing field even.
• Clutch launch assist will no longer operate if the car does not have a clutch pedal.
• Fixed a systemic mis-processing of engine friction torque values.

iRacing Weather System​

• A new Weather Type is now available for selection in Timeline Weather Mode: Spotty Rain.
• - - Spotty Rain simulates heavy to light scattered rain showers in the region throughout the allotted time. Just like real scattered rain showers, this mode results in a well-mixed bag of patches of clouds and sun in varying degrees, accompanied by periodic stints of rain in various levels of heaviness. When Spotty Rain is in use, pay close attention to your weather radar to see what’s on the horizon for your race!
• - - Spotty Rain is only available in Timeline Weather Mode.
• Fixed the way rain calculations interact with barometric pressure to correct an oversight that sometimes made it impossible for rain to occur in the Simulation, even if it was selected.
• Fixed an issue where areas of the track surface could appear to have square blocks of wet/dry areas, especially in transition areas between wet and dry spaces.
• Fixed an issue where the start and stop times for rainfall would always appear at whole-minute intervals. Mother Nature need not be so exacting.
• Fixed an issue forcing the minimum cloud cover at the start and end of any Timeline block of Rain to be at least 75%.
• Fixed an issue where a vehicle windshield could suddenly be masked or unmasked with fog or rain effects at night.
• Fixed an issue where tire spray from your car could appear on your windshield.
• Fixed an issue with time calculation to correctly account for start time offsets that already include accelerated time plus elapsed Session time. This improves the accuracy of weather for Sessions using Simulated Sun Acceleration.
• Fixed an issue with the keyframe data used by the Simulation when Simulated Sun Acceleration was in effect, and the Session Start Time was not on a whole hour interval.
• Fixed an issue in replays where parts of the track could appear dry when viewing the start of a Session, even though the track is wet.

Race Control​

• Fixed an issue where gain-time penalties could recalculate themselves every 5 seconds in ever-increasing values, resulting in unclearable gain-time penalties.

Road Racing​

• Tire cooling parameters have been slightly updated for stockcars driving on road courses.

Dirt Racing​

• Water content parameters for racing dirt surfaces have been updated slightly.

AI Racing​

• AI Drivers have successfully completed competency courses, and AI Racing is now available for the following new vehicles:
• - - BMW M4 G82 GT4
• - - McLaren 720S GT3 EVO
• - - Mini Stock
• AI Drivers have graduated with racing certificates, and AI Racing is now available for the following new tracks and new configurations:
• - - Cadwell Park Circuit (Full, Club, Moto, & Woodlands)
• - - Circuit de Spa-Francorchamps (Grand Prix Pits, Classic Pits, Endurance, & Bike)
• AI Drivers have earned their Wet Tires Merit Badge on all of the new and updated non-Dirt content, and are ready to race in the rain!
• AI Vehicles have improved their tire temperature modeling, making them more accurate and comparable to a player-driven car. This improves AI Drivers’ accuracy and performance, especially at extreme temperatures. This improvement has been made on the following vehicles for this Season Release:
• - - GT3 Class Cars
• - - NASCAR Xfinity Series Class Cars
• - - TCR Class Cars
• - - FIA F4
• - - Ford Mustang FR500S
• - - Formula Vee
• - - Renault Clio R.S. V
• AI Drivers have received extra training in very wet conditions at many road course main configs, as well as dry training at Nürburgring (Combined & Nordschleife).
• AI Drivers have completed their Summer Reading assignments to prepare for the ‘24-’25 school year. Their materials included:
• - - Pitch n’ Roll Don’t Mean Outta Control! - Basic Lessons from Wild Racing Pros
• - - The Appropriate Standing Start Procedures for Everyday Living
• - - 101 Tips & Tricks for Improving Your Off-Track Recovery
• Despite what they may claim, AI Drivers are far from perfect. Here are a few updates and fixes we have provided them with for this release:
• - - AI Drivers now start events with a little extra fuel if “Do Not Count Caution Laps” is enabled. They have learned this the hard way too many times.
• - - Fixed an issue when some AI Drivers occasionally spaced out at Superspeedways and forgot to leave the pit or grid stall.
• - - Fixed an issue where including AI Drivers in a Session could slightly alter the dynamic track data or weather conditions once loaded. We think the AI Drivers were trying to cheat by altering the code — we’ve put a stop to it!
• - - Fixed an issue where AI Drivers always appeared to be using an incorrect vehicle setup for the Ray FF 1600.

Graphics​

• The iRacing Graphics Team has completed a variety of updates for the 2024 Season 4 Release, including:
• - - The reflectivity parameters for rubber marbles have been adjusted to improve their visibility on highly reflective surfaces.
• - - Windshield glass and dirt surface texture shaders have been updated.
• - - A variety of dirt textures and decals that appear on car bodies have been updated.
• - - SpeedTree lighting shaders have been updated to improve day/night and night/day transitions.
• - - For the PopcornFX system, adjusted the dynamic memory buffer allocations for improved performance.
• - - A HDR-tonemapper has been added that improves the appearance of very bright areas that would previously burn-out on non-HDR monitors.
• - - The "AAQuality" setting has been removed from the “rendererDX11.ini” file.
• The iRacing Graphics Team has fixed a variety of issues for the 2024 Season 4 Release, including:
• - - Fixed an issue where the graphics rendering froze, but audio and controls were still responsive during Rain sessions.
• - - Fixed an issue where the incorrect skid types from your car could appear on surfaces, such as grass skids appearing on asphalt.
• - - Fixed an issue where important people could go missing from your life based on a dynamic Level-of-Detail (LOD) settings bug. This fixes an issue where Lollipopman could sometimes be completely invisible, even when you were right in front of him - he’ll never leave you hanging in the pits again!
• - - Fixed an issue with Whelen caution lights. The lights always appeared to have a yellow hue at a distance, regardless of what color light was active, and the light color was only evident after getting closer.
• - - Fixed an issue where custom car paints could appear in a different hue depending on if a metallic car pattern was selected or not. Some metallic custom car paint schemes might require a tweak after this change.
• - - Fixed an issue where particle effects generated by other drivers could be seen in your Lone Practice and Qualifying Session.
• - - For PopcornFX, fixed an issue where the dynamic vertex buffers were wrapping prematurely, resetting their rendering process.
• - - Fixed an issue with artifacts appearing whenever low-resolution puff effects were using soft-particles.
• - - Fixed an issue where SpeedTree tree instances received no lighting information from stadium lights.

Audio​

• The process for deprecating DirectSound from iRacing begins with this Season Release.
• - - Users may need to reselect their sound device to restore audio after this update.
• - - Sound devices are only listed once in the device selector. If DirectSound is required for hardware compatibility, it can still be enabled in the “app.ini” file.
• - - The DirectSound mixing balance for stereo audio into surround speakers has been fixed and removed from the “app.ini” file.
• Low-speed curb strikes and scrape sounds have been improved.
• Support for a new audio codec, OPUS, has been added, and all environment sounds in the Simulator have been converted into this new format.
• - - The OPUS audio format requires less storage space while maintaining a high degree of quality. This reduces the overall file size of iRacing while maintaining the experience you expect.
• The value "sampleRate" has been removed from the “app.ini” file as it is no longer used. The sample rate is set by the audio device in Windows settings.
• Protections have been added to reduce simulator crashes when multimedia devices misbehave.

Controls​

• Support has been added for vibrating Conspit pedals.
• If a Simagic wheel is detected, and it does not natively support a 360 Hz mode, it will now automatically fall back to DirectInput.
• Fixed an issue where Thrustmaster devices could cause the Simulator to crash during shutdown.

Auto-Fuel​

• Fixed an issue where Auto-Fuel modified the fuel fill amount on pit exit even if “autoFuelDefaultEnable” was false.

Replay​

• During replays of events that include a Lone Qualifying Session, all participants are now visible and available for watching.

Sporting Code​

• The Official iRacing Sporting Code has been updated. Changes for the 2024 Season 4 Release include:
• - - 5.4. Divisions - Changed the description of exactly when Divisions are calculated.
• - - 6.8. Starting - The description of the jump-start penalty has been corrected.
• - - 6.11.4. Tires - Fixed a section bullet numbering issue.
• You can always find the iRacing Official Sporting Code here: https://www.iracing.com/iracing-official-sporting-code/

Telemetry​

• Fixed an issue that could cause momentary dropouts to live telemetry.

CARS:​

Car Class: GT3 Class Cars​

• Endurance light packages are now selected unless a Sprint setup is in use.
• iRacing setups have been updated.

Car Class: GT4 Class Cars​

• Various repair parameters have been updated, including repair times and aerodynamic penalties.

Car Class: GTE Class Cars​

• Clutch use is now locked-out when the vehicle travels over 70 KM/H to prevent unrealistic fuel savings mechanics.
• iRacing setups have been added.

Car Class: GTP Class Cars​

• Clutch use is now locked-out when the vehicle travels over 70 KM/H to prevent unrealistic fuel savings mechanics.
• The wet tire tread textures have been updated.

Car Class: NASCAR Cup Series Next Gen Class Cars​

• For the damage model, material properties and break limits for the nose, hood, rear, and fenders have all been updated.
• iRacing setups have been added.

Car Class: NASCAR Legends 1987 Class Cars​

• For the damage model, updated the physics properties of several removable vehicle pieces to provide a more realistic experience.
• iRacing setups have been updated.

Car Class: NASCAR Truck Series Class Trucks​

• For the damage model, improved the durability for the nose, and updated the material properties for detached vehicle parts.
• iRacing setups have been updated.

Car Class: NASCAR Xfinity Class Cars​

• Some drafting parameters have been updated.
• Aerodynamic properties have been adjusted slightly for improved performance on road courses.
• For the damage model, break limits for all mounts and the roof hull have been strengthened, and the front and rear bumpers are more durable.
• Updated the appearance of scrape damage on body paint, especially reflectivity.
• Tire tread pattern has been updated slightly.
• Fixed an issue where opponent vehicles could appear to snag the ground on their splitters, or make ground contact on the front suspension at road and short oval tracks.
• iRacing setups have been added.

Car Class: Stock Car Pro Series Class Cars​

• Fixed an art issue with the ARB.

Car Class: Street Stock Cars​

• Nose and rear bumper cameras have been adjusted.
• iRacing setups have been updated.

Car Class: TCR Class Cars​

• Rain tires are now available for these cars!
• - - This includes: Audi RS3 LMS TCR, Honda Civic Type R TCR, Hyundai Elantra N TCR, and Hyundai Veloster N TCR.
• A variety of repair parameters have been updated, including repair times and aerodynamic penalties.
• For the damage model, fixed an issue where the rear wing would not always detach even if the trunk was fully detached.
• iRacing setups have been updated.

Car Class: V8 Supercars Class Cars​

• For the damage model, wheels have been strengthened, and nose hulls have been updated to provide additional coverage for the front wheels.

Car Class: [Legacy] NASCAR Xfinity Class Cars​

• Gear adjustments are now allowed at all tracks.

Acura ARX-06 GTP​

• Fuel consumption rate has been increased slightly.

ARCA Menards Chevy / Gen 4 Cup​

• (BOTH) - iRacing setups have been updated.

Aston Martin DBR9 GT1​

• iRacing setups have been updated.

Audi R8 LMS EVO II GT3​

• Parked tire texture has been slightly updated.

Audi RS3 LMS TCR​

• For the damage model, the outer wing mounts may now be completely detached with sufficient damage.

BMW M4 F82 GT4​

• This vehicle has been renamed from “BMW M4 GT4” for clarity.

BMW M4 GT3​

• Turbo boost curve has been adjusted for improved drivability in lower gears.
• Water clearing for tires in wet conditions has been increased.
• Rain windshield effects have been improved.
• Fixed an issue where some nose and rear objects were using the incorrect model versions at far camera distances.

BMW M4 G82 GT4​

• NEW CAR!
• The BMW M4 G82 GT4, a new Sports Car, is now available for purchase and racing!
• - - After years of substantial success for the original M4 GT4 platform, BMW takes things to the next level with the M4 G82 GT4. Debuting in the 2023 race season, the updated entry took over around the world in series from the IMSA Michelin Pilot Challenge to endurance races at the Nürburgring Nordschleife. The 3.0-liter turbocharged engine maxes out at an impressive 530 horsepower, while additional refinements equipped the car to build on the legacy set out by its predecessor, the F82 model. The M4 G82 GT4 immediately built on the F82’s impressive legacy with a class win on its first try at the 24h Nürburgring, titles in both IMSA series with Turner Motorsport, and much more. It’s a tall order for any car to surpass a legacy like the one that the F82 model built—but the M4 G82 GT4 has been up to the task.
• - - Current owners of the BMW M4 F82 GT4 will receive iRacing Credits as compensation for the release of this newer version of the car. Compensation is based on how long ago a customer purchased the car, and is as follows:
• - - - - 0-90 days = 100% price compensation
• - - - - 91-180 days = 75% price compensation
• - - - - 181-365 days = 50% price compensation
• - - - - 366+ days = no compensation
• AI Racing is available with this car!
• This car is rain-racing ready!

Chevrolet Corvette Z06 GT3.R​

• Overall downforce has been increased slightly.
• Fuel economy has been updated.
• Tire rotor shaders have been updated.

Dallara F3​

• Aerodynamic damage penalties have been updated for greater downforce loss penalties for losing major aero parts and less total drag increase with damage.
• iRacing setups have been updated.

Dallara iR-01​

• iRacing setups have been updated.

Dallara IR18​

• Push-to-Pass (P2P) behavior has been updated.
• - - This behavior now closely matches the implementation of the real series. Each team has 200 seconds of P2P to use throughout a Race Session. Practice Sessions allow unlimited P2P use, and Qualifying Sessions allow no P2P use. A button press will now disengage P2P if it is active.
• Car rules have been updated based on the latest P2P changes.
• For the damage model, the durability for wheels and body panels have been reduced slightly, and the physics properties for detached pieces have been updated.
• iRacing setups have been updated.

Dallara P217​

• For the damage model, stiffened chassis and rear wing hulls, the progression of visual scrape damage has been tuned for the nose, and the physics properties for detached pieces have been updated.
• Number placement has been standardized for all Series.
• Fixed a misalignment error in the F5 tire black box.
• Interface model has been updated.

Dirt Mini Stock​

• NEW CAR!
• The Dirt Mini Stock, a dirt oval car, is now available for racing!
• - - Looking for a fun, approachable step into oval racing? The Mini Stock is one of your best bets. Featuring four-cylinder engines, these smaller, full-bodied cars are a great way to learn the basics of going fast and turning left before stepping into street stocks, late models, or anything further up the ladder. The iRacing Mini Stock is configured for fun on both paved and dirt ovals to reflect its diverse use in the real world. With more than 200 horsepower under the hood and weighing in at a relatively light 2,350 pounds, this is one of the most nimble, yet accessible, driving experiences you'll have on either surface. Even if oval racing isn't your go-to, just a few laps behind the wheel of one of these cars might change your mind.
• This car is FREE for all iRacing Members!

Ferrari 296 GT3​

• Turbo boost curve has been adjusted for improved drivability in lower gears.
• Water clearing for tires in wet conditions has been increased.
• Rain windshield effects have been improved.
• Improved the appearance of torque effects on opponent vehicles to better match what the driver is actually experiencing.
• Fixed an issue where some nose and rear objects, and rear lights appeared incorrectly or were missing at certain camera distances.

FIA F4​

• Aerodynamic damage penalties have been updated for greater downforce loss penalties for losing major aero parts and less total drag increase with damage.

Ford Mustang GT3​

• 2024 Season 4 BoP Adjustments: Increased engine torque slightly, and increased aerodynamic drag slightly.
• Updated engine braking based on data from Ford.
• Rear suspension geometry has been updated to match more closely how teams race the car in real life.
• Front suspension caster has been increased slightly.
• The rear diffuser shape has been raised slightly to improve ground impact behavior.
• Fuel economy and engine cooling factors have been updated.
• Tire temperature warning threshold on the DDU has been increased to match other GT3 cars with this feature (no change to car physics).
• Water clearing for tires in wet conditions has been increased.
• The size of the windshield banners has been adjusted.

Ford Mustang FR500S​

• Rain tires are now available for this car!
• All tire parameters have been tuned.
• The Garage layout has been updated to put tires on their own tab.
• iRacing setups have been updated.

Formula Vee​

• Vehicle textures have been updated slightly.

Global Mazda MX-5 Cup​

• Fuel burn rate has been updated to better match real-world information.
• For the damage model, increased vertical break limit for wheels, and updated the physics properties for detached car pieces.

Hyundai Veloster N TCR​

• Driver animations have been updated.

Indy Pro 2000 PM-18​

• Fixed a gruesome issue where pit box characters had been decapitated. Luckily, their heads were found floating a few feet above their bodies and reattached with a little elbow grease.
• iRacing setups have been updated.

Late Model Stock​

• iRacing setups have been updated.

Legends Ford '34 Coupe​

• iRacing setups have been updated.
• (Dirt) - Fixed an issue where visor tear-offs were not working. This was a practical joke by one of the pit crew.

Ligier JS P320​

• Aerodynamic damage penalties have been updated.
• - - Greater overall downforce and drag penalties have been added, with a larger portion of the total possible loss applied to parts that can detach from the car. This should make losing the nose piece, the rear engine cover, and the rear wing much more costly.
• For the damage model, slightly lowered break limits for the nose and reduced the mass for detachable parts.

Lotus 49​

• iRacing setups have been updated.

Lotus 79​

• Dashboard gauge glow is now operational.
• iRacing setups have been updated.

McLaren 720S GT3 EVO​

• [pending final approval from McLaren]
• NEW CAR!
• - - The McLaren 720S GT3 EVO, a new Sports Car, is now available for purchase and racing!
• - - Since 2019, the McLaren 720S GT3 has proven itself one of the world's most competitive GT3 platforms. That success only continued in 2023 with the introduction of the 720S GT3 EVO, which improved upon the car's aerodynamics, suspension, overall balance, and other key elements. The 720S GT3 EVO is a popular customer car the world over. After a long-standing association with the McLaren brand at both its automotive dealerships and in the GT4 class, Pfaff Motorsports brought the car to IMSA's GTD Pro class for the 2024 season for the first time. The team scored its first podium with the 720S GT3 EVO at WeatherTech Raceway Laguna Seca in May, adding to the long history of McLaren GT3s running up front the world over.
• - - Current owners of the McLaren MP4-12C GT3 will receive iRacing Credits as compensation for the release of this newer version of the car. Compensation is based on how long ago a customer purchased the car, and is as follows:
• - - - - 0-90 days = 100% price compensation
• - - - - 91-180 days = 75% price compensation
• - - - - 181-365 days = 50% price compensation
• - - - - 366+ days = no compensation
• - - The original McLaren MP4-12C GT3 is becoming [Legacy] content.
• AI Racing is available with this car!
• This car is rain-racing ready!

Mercedes-AMG GT3 2020​

• 2024 Season 4 BoP Adjustments: Increased downforce significantly, and increased aerodynamic drag significantly.
• Fuel economy and engine cooling factors have been updated.
• Water clearing for tires in wet conditions has been increased.
• Fixed an issue where some nose and rear objects were using the incorrect model versions at far camera distances.

Mercedes-AMG W12 E Performance​

• Fixed an issue where external shift lights did not align with the Simulation’s rev lights per gear.

Mercedes-AMG W13 E Performance​

• Fixed an issue where external shift lights did not align with the Simulation’s rev lights per gear.

Mini Stock​

• NEW CAR!
• The Mini Stock, a new Asphalt Oval car, is now available for racing!
• - - Looking for a fun, approachable step into oval racing? The Mini Stock is one of your best bets. Featuring four-cylinder engines, these smaller, full-bodied cars are a great way to learn the basics of going fast and turning left before stepping into street stocks, late models, or anything further up the ladder. The iRacing Mini Stock is configured for fun on both paved and dirt ovals to reflect its diverse use in the real world. With more than 200 horsepower under the hood and weighing in at a relatively light 2,350 pounds, this is one of the most nimble, yet accessible, driving experiences you'll have on either surface. Even if oval racing isn't your go-to, just a few laps behind the wheel of one of these cars might change your mind.
• This car is FREE for all iRacing Members!
• AI Racing is available with this car!

Modified - SK / NASCAR Whelen Tour Modified​

• (BOTH) - iRacing setups have been updated.

Pontiac Solstice​

• Fixed a variety of artwork issues for this car, including:
• - - Body shell model has been tuned slightly.
• - - Body pieces appeared to duplicate at certain camera distances.
• - - Missing windshield reflections.
• - - Tires visibly changing at certain camera distances.

Porsche 911 GT3 Cup (992)​

• Brake pedal input force has been adjusted slightly to reduce the likelihood of brake locking.
• iRacing setups have been updated.

Porsche 911 GT3 R (992)​

• Engine power has been increased slightly.
• Fuel economy and engine cooling factors have been updated.

Porsche 963 GTP​

• Fuel consumption rate has been increased slightly.

Radical SR10​

• iRacing setups have been updated.

Ray FF1600​

• iRacing setups have been updated.

Renault Clio R.S. V​

• Rain tires are now available for this car!
• All tire parameters have been tuned.
• Pitstop tire changes and fuel fill rate have been slowed to be more realistic.
• Fuel burn rate has been optimized.
• The Garage layout has been updated to put tires on their own tab.
• iRacing setups have been updated.

SCCA Spec Racer Ford​

• Garage tooltip has been updated for the dampers to indicate that +0 is minimum damping and +20 is maximum damper stiffness. This makes no changes to the physics model.
• iRacing setups have been updated.

Silver Crown​

• iRacing setups have been updated.
• For the damage model, updated the chassis shape to improve grounding behavior, and lowered the stiffness of detached parts.

SRX​

• iRacing setups have been updated.

Super Formula Lights​

• Aerodynamic damage penalties have been updated.
• - - Reduced overall drag penalties, increased total downforce penalties slightly. Parts that can detach contribute a larger proportion of the total damage. This should result in less loss of straight-line speed with minor contacts but a greater loss in overall downforce when the wings or side-pods are lost from the car.
• Fixed an issue where the front wing could not be fully repaired.
• For the damage model, stiffened the chassis, and updated the physics properties for detached pieces and wheels.
• iRacing setups have been updated.

Super Formula SF23​

• Aerodynamic damage penalties have been adjusted.
• - - Reduced overall drag penalties, increased total downforce penalties slightly. Parts which can detach contribute a larger proportion of the total damage. This should result in less loss of straight-line speed with minor contacts but a greater loss in overall downforce when the wings are removed from the car.
• iRacing setups have been updated.

Super Late Model​

• iRacing setups have been updated.

Toyota GR86​

• Fuel burn rate has been updated to match real-world information better.
• Various repair parameters have been updated, including repair times and aerodynamic penalties.
• Fixed an issue where the car would not accept a full tank fill.

USF 2000​

• iRacing setups have been updated.

[Legacy] McLaren MP4-12C GT3​

• With the release of the McLaren 720S GT3 EVO, the McLaren MP4-12C GT3 has now become [Legacy] content.
• This vehicle will no longer appear in Official Series.
• This vehicle’s price has been lowered to $2.95 for direct iRacing customers.

[Legacy] NASCAR Truck Chevrolet Silverado - 2008​

• iRacing setups have been updated.

TRACKS:​

Atlanta Motor Speedway​

• (Oval) - Night lighting is now enabled at this track configuration!

Autodromo Internazionale Enzo e Dino Ferrari​

• (Grand Prix) - Pit road speed limit has been updated.

Cadwell Park Circuit​

• NEW TRACK!
• Cadwell Park Circuit, a new Road Course, is now available for purchase and racing!
• Cadwell Park Circuit includes four track configurations: Full, Club, Moto, and Woodlands.
• - - Established in 1934 and taking its current shape in 1961, Lincolnshire, England's Cadwell Park has a long history of hosting both motorcycle and car racing. While its narrow width makes it an infrequent host of four-wheel racing above the club level, its British Superbike event is the premier event in that series, and British Superkart also visits the circuit regularly. Cadwell Park boasts four layouts: the 2.175-mile Full Circuit, a Moto variant that debuted in 2004 after MotorSport Vision purchased the track, and two shorter Club and Woodlands configurations. The full layout features numerous hills and crests through its 18 turns, with the most famous segment, “The Mountain,” often launching racers into the air as a natural jump.
• AI Racing is available at all four of the track configurations here, including: Full, Club, Moto, and Woodlands.

Circuit de Lédenon​

• The 4-Tires-Off rule has been applied to all hard surface runoffs.

Circuito de Navarra​

• (Speed Circuit & Speed Circuit - Medium) - The Course Cut Penalty for the final Turn has been increased.
• (Speed Circuit - Medium) - Checkpoints at Turn 6 have been updated.
• (Speed Circuit - Short) - The Course Cut Penalty for Turn 1 and Turn 2 has been increased.

Circuit de Spa-Francorchamps​

• NEWLY UPDATED TRACK!
• A new 2024 laser scan version of Circuit de Spa-Francorchamps is now available for racing!
• - - We have rebuilt Spa from the ground up, using a fresh scan that includes all of the new improvements to the facility, resurfaced roads, and the significant changes made from La Source through Eau Rouge and Raidillon and elsewhere. All drivable surfaces have been remodeled and art has been rebuilt from scratch, as well as any new structures or buildings. Where appropriate, existing objects from the original have been rebuilt or upgraded to PBR materials.
• - - The new 2024 laser scan version of Circuit de Spa-Francorchamps adds four new track configurations to the existing track, including: Grand Prix Pits, Classic Pits, Endurance, and Bike.
• - - - - Purchase Circuit de Spa-Francorchamps from the iRacing Store! All owners of Circuit de Spa-Francorchamps have access to all (now seven) track configurations.
• - - The original track configurations for Circuit de Spa-Francorchamps have been post-pended with “2010”, denoting their laser scan data year.
• AI Racing is available at all four of the new track configurations here, including: Grand Prix Pits, Classic Pits, Endurance, and Bike.
• Night lighting is now fully enabled at this track!

Circuit Zandvoort​

• Fixed some visual glitches with a variety of curbs.

Circuit Zolder​

• FULL ART UPDATE!
• Circuit Zolder has been completely updated with brand new models, textures, and materials for 2024!
• - - We have completely overhauled the artwork for Zolder, using the latest and greatest techniques and methods that will bring the look of this track up to our current quality standards. Drivable surfaces remain unchanged.
• - - Circuit Zolder includes two track configurations, including: Grand Prix and Alternate.
• - - - - Purchase Circuit Zolder from the iRacing Store!
• - - This 2024 version has completely replaced the existing Circuit Zolder - no action is needed to use this latest and greatest artwork! The older version no longer exists. Existing Replay files will load and run on the new 2024 version.

Crandon International Raceway​

• A new track logo has been added.
• Fixed an issue where some pit crew members were levitating several inches above the ground.

Daytona International Speedway​

• (2008 Configurations) - When attempting to create a Hosted Session using these track configurations, fixed an issue where no interface warning was given to inform drivers that these track configurations do not have night lighting.

Fuji International Speedway​

• A new track surface bumpmap has been generated.
• - - This fixes bumps that were in the “No Chicane” config cut-through, and a big visual bump that was in the Turn 7 runoff.
• (Grand Prix) - The slowdown penalty for cutting the chicane has been increased.

Hungaroring Circuit​

• Pit road speed limit has been updated.

Indianapolis Motor Speedway​

• (Oval) - Fixed an issue where drivers were able to dangerously cut back onto the track through the grass from the pit exit and then return to the apron to finish the normal pit exit route.
• (Oval & Open Wheel Oval) - Fixed an exploit that was allowing drivers to run wide while exiting pit lane.
• (Road Course) - A missing painted curb has been added to the exit of Turn #6.
• A new track surface bumpmap has been generated.

Las Vegas Motor Speedway​

• (Road Course Combined, Road Course Long, Road Course Short) - Starting grids have been updated.

The Milwaukee Mile​

• The track surface parameters for the high line have been updated for improved accuracy.

Misano World Circuit Marco Simoncelli​

• Improved issues with visual popping for a variety of objects as the camera changes distances.
• Paddock lights have been updated for reduced polycount at far camera distances.

Mount Washington Auto Road​

• Fixed an issue where rain was allowed at this track. Rain is not allowed at tracks with dirt racing surfaces, yet.
• - - Mt. Washington is in fact world famous for its calm and serene weather year-round.

New Hampshire Motor Speedway​

• (Road Course, Road Course with North Oval, Road Course with South Oval) - Starting grids have been updated.

Nürburgring Grand-Prix-Strecke​

• (Grand Prix) - Pit road speed limit has been updated.

Oswego Speedway​

• Improvements have been made to skid marks, asphalt cracks, and textures.
• Fixed an issue where this track was incorrectly considered not lit for night racing. It is fully lit.

Red Bull Ring​

• (Grand Prix) - Pit road speed limit has been updated.

Summit Point Raceway​

• (School) - Starting grids have been updated.

Texas Motor Speedway​

• (Oval) - Starting grids have been updated.

[Legacy] Charlotte Motor Speedway - 2008​

• (Road Course) - Starting grids have been updated.

[Legacy] Pocono Raceway - 2009​

• (East) - Starting grids have been updated.

[Legacy] Texas Motor Speedway - 2009​

• (Road Course Long, Road Course Combined) - Starting grids have been updated.

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What are your thoughts on the changes made for the iRacing 2024 Season 4 build? Tell us in the comments down below and join the discussion on our iRacing forums!