Because the game shares an engine with GTR2 , many mods are cross-compatible or have been directly ported.
| Generation | The #1 Weakness | The Challenge Fix | | :--- | :--- | :--- | | | Rear subframe cracks | Weld-in reinforcement plates & solid subframe bushings | | E92 M3 | Rod bearings & Throttle actuators | BE Bearings + upgraded actuators (pre-failure) | | F80 M3 | Heat soak (intercooler) | CSF charge coolers & vented hood | bmw m3 challenge mods
Before diving into specific files, it is important to understand the potential of the platform. BMW M3 Challenge (often abbreviated as M3C) utilizes an early iteration of the isiMotor2 engine. This is the same DNA found in rFactor and GTR2 . Because the game shares an engine with GTR2