Project Motor Racing: LMDh class, driving physics, AI and more in focus of update V2.0.0.4

(MST/Speedmaniacs.de) – On the afternoon of May 20, 2026, and just over two weeks after the last update, Straight4 Studios released version 2.0.0.4 for Project Motor Racing. The focus is on the LMDh class and suspension behavior.

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By revising the behavior of the ICE (Internal Combustion Engine) and ECU in LMDh vehicles, driving behavior, fuel consumption, and the responsiveness of the powertrain during acceleration and braking are now intended to be overall more believable.

In addition to adapting the tire model to the one introduced in other classes since update 2.0, currently only in the LMDh class, the heat transfer from the brakes now more accurately affects tire temperatures, linking brake load more directly to tire performance.

LMDh Driving Behavior and Vehicle Physics

Strong braking phases now contribute more noticeably to warming the tires and temperature management, adding another layer of realism to race pace, consistency, and vehicle setup decisions.

Suspension behavior has been significantly improved, resulting in overall better feedback between vehicle and driver. For vehicles with multi-link rear suspension, the way the suspension conveys track surface and vehicle response to the driver has been enhanced.

The progressive bump stop behavior of the suspension has been improved to achieve a more natural load buildup at the end of the suspension travel. This makes vehicles behave more calmly when driving over curbs, under heavy compression, and during quick direction changes, while providing clearer feedback at the limit.

Besides fixing bugs and adding support for steering wheels, pedals, and sim racing accessories on the PC version, the developers also optimized AI opponent behavior and resolved inconsistencies with vehicles and tracks. The changelog provides further details on the individual fixes and adjustments.

Project Motor Racing – Patch Notes – Version 2.0.0.4 (20.05.2026):
PHYSICS and HANDLING
-Improvements made to all cars that use the Multi-link type of rear suspension.
-Improvements made to steering response when using a controller.

PHYSICS and HANDLING – PER VEHICLE
-BMW M3 GTR (E46)
-Improved suspension geometry to be more accurate to the real-world counterpart.

BMW M4 GT3 (G82) EVO
-Traction Control (TC) now enabled by default.

PHYSICS and HANDLING – PER CLASS
LMDH
-Updated ICE (Internal Combustion Engine) including engine braking and fuel rates.
-Updated ECU including shifting speed and deploy/regen logic.
-Improved progressive bumpstops for suspension.
-Heat dispersing from brakes now affects tyre temperatures.
-Reworked handling model.
-Improved tyre model.
-New default Set-ups.

MAZDA MX-5 TROPHY
-Reworked handling model to more accurately match real-world specs.
-Rebalanced grip levels for wet tyres.
-New default Set-up.

N-GT
-Improved Traction Control (TC) and Antilock Braking System (ABS) assist when enabled.
-Improved tyre model.
-Improved suspension model.
-New default Set-up.

ART – VEHICLES
-Improved driver overall animations, such as gear changing and hand placement.

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Aston Martin Vantage GT3
-Adjusted chassis around front tires to avoid clipping.

Chevrolet Corvette C7.R
-Fixed an issue with the fuel light on the MoTeC system not displaying correctly while in cockpit view.

Ford GTLM GTE
-Updated primary livery with correct sponsor logos.

Jaguar XJR-9
-Corrected interior glow map in the cockpit view.

Mercedes-AMG GT4
-Fixed an issue with rear view mirror displaying artefacts when in cockpit view.

Nissan Skyline (R34) JP2
-Updated steering wheel with correct brand logos.

Toyota Supra JP2
-Further updates to the car body, exhausts and fuel nozzle nodes, to accurately reflect the correct 2003 model.

TVR Tuscan T400R
-Fix for overly reflective digits on the MoTeC system when in cockpit view.

ART – ENVIRONMENT
Kyalami Grand Prix Circuit
-Adjusted car placement for pits to allow more space.

Lexington
-Adjusted track limits and penalty system detection to prevent unfair advantage on flying laps.

AI OPPONENTS
-Improved tyre wear to be more consistent and create more natural pit stops frequency.
-Rebalanced behaviour and tyre wear for wet conditions.
-Fixed an issue where AI Opponents tyre grip would not reset between sessions.
-Further improvements made to when AI opponents are under blue flag conditions.
-Lime Rock Park – Chicane layout: improved racing lines and entry into the pits.
-Northampton – Original Pits layout: improved racing line.
-Improved AI throttle and brake control.

GAMEPLAY
-Start lights timing is now randomised for all modes.
-Added option in the settings menu to change grass quality.
-Added option in the settings menu to change windscreen quality.
-Fixed an issue causing some players to soft-lock on a loading state in the Endurance Hall events.
-Fixed an issue preventing players from accessing previously saved replays.
-Updated pre-race and podium scenes so they are centred when using a widescreen aspect ratio.
-Fixed an issue that would automatically disqualify the player from a race when they ran out of fuel during a session.

HUD and UI
-Improved lighting and rendering for the car selection screen to better reflect cars’ materials.
-Changed the class icon on the car selection screen to act as a button to access the class selection screen.
-Fix for leaderboard failing to switch properly when transitioning from a qualifying session.
-Fixed an issue with the leaderboard for race session to display correct order.
-Fixed an issue preventing preferred units from displaying correctly in the Vehicle Set-up menu.
-ModHub: added sorting filters; categories, top rated, and most downloads.
-Introduced “bumpstop” visual to the HUD tyres widget.

AUDIO
-Improved Race Engineer voice lines when approaching a backmarker.
-Improved Race Engineer voice lines when giving advice on tyre temperatures.

INPUT
-Fixed an issue preventing custom input settings from saving correctly.
-Added support to the following devices on the PC platform:
–CubeControls Formula Wheel.
–Pro Racing Simuladores Pedals.
–Logitech RS Pro Pedals (as a separate device).
–AW Tau Sequential Shifter V2.
–Derek Speare Designs 12bit Controller.

GENERAL
-The Eventhub page has been updated with next upcoming race and time within a series.
-Information on track and number of laps added.

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