2015-2020
The F80/F82 M3/M4 marks BMW's shift to forced induction, and the S55 twin-turbo inline-six delivers 425-444 hp with a torque curve that makes the car devastating from any speed. The turbo lag is minimal — BMW engineered the twin-scroll turbo system to feel naturally aspirated through most of the rev range. On track, the F82 M4 is a serious weapon. The carbon fiber driveshaft saves weight and improves throttle response. The active M differential manages traction beautifully. The Competition Package adds stiffer springs, retuned dampers, and slightly more power. The GTS model goes further with a water-to-air intercooler, carbon fiber roof, and additional power. The challenge is the sheer speed. 425+ hp in a 3,500 lb car reaches illegal speeds in seconds on any track. The cooling system must be upgraded for sustained track use — the S55 charges air through an air-to-air intercooler that heat soaks quickly. The carbon ceramic brakes (optional) are better than the standard steel units but are extraordinarily expensive to replace.
Crank hub fix and intercooler upgrade are the critical items.
Modifications
Total Estimate
$1.5K – $4K
Master braking, throttle, and steering inputs for your BMW M3/M4.