The BMW M4 GT3 debuts in iRacing’s 2021 Season 4 build (September 2021), replacing the outgoing BMW M8 GTE in BMW’s global customer racing lineup.
Powered by a 3.0L twin-turbocharged inline-6 producing around 590 horsepower, the M4 GT3 represents one of the most advanced GT3 entries in both real-world and sim racing. Designed to be accessible to customer teams while delivering factory-level performance, the M4 GT3 quickly becomes a favorite choice across iRacing’s stacked GT3 class.
Technical Highlights
- Engine: 3.0L twin-turbo inline-6
- Horsepower: ~590 hp (Balance of Performance dependent)
- Transmission: 6-speed sequential paddle-shift
- Chassis: Based on the BMW G82 M4 road car, extensively modified for racing
- Aero Package: Wide-body GT3 design with aggressive diffuser, splitter, and GT3 rear wing
- Electronics: Modern GT3-spec ABS and traction control
Racing Context
The M4 GT3 is built to compete in top-level GT3 series worldwide, including:
- IMSA WeatherTech SportsCar Championship
- FIA World Endurance Championship (WEC)
- GT World Challenge
It is BMW’s global GT3 flagship, replacing both the older M6 GT3 and M8 GTE platforms.
In iRacing
In iRacing, the BMW M4 GT3 is immediately one of the most popular and competitive GT3 cars. Its turbocharged power and strong aero platform make it fast on both technical circuits and high-speed venues. The car is widely used in the IMSA iRacing Series, VRS GT Endurance Championship, and special events such as the Daytona 24 and Spa 24 Hours.
Final Thoughts
The BMW M4 GT3 brings a modern, high-tech approach to the GT3 category. With a strong balance of power, aero, and drivability, it is a go-to choice for sim racers at all levels.
It is advanced, versatile, and already one of the most iconic GT3 cars in iRacing.
