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BMW M3/M4

BMW M3/M4 F80/F82

2015-2020

Serious Track CarExcellent
3.0L S55 Twin-Turbo I6425-444 hp3,530-3,615 lbsRWD6-speed manual / 7-speed DCT

HPDE Overview

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.

Strengths

S55 twin-turbo produces 425-444 hp with minimal lag — devastating on any straightActive M differential manages traction with precisionCarbon fiber driveshaft reduces rotating mass and improves throttle responseDCT shifts in under 100ms — faster than most drivers can shift manuallyCompetition Package is a meaningful track upgrade from standard M4

Weaknesses

Charge air intercooler heat soaks after 3-4 hard laps, reducing power significantlyHeavy at 3,530+ lbs — high consumable costsS55 crank hub can spin under aggressive track use — a known catastrophic failureCarbon ceramic brakes (if equipped) cost $5,000+ per axle to replaceElectric power steering lacks the feel of the E46/E92 hydraulic systems
Why People Love It

The F82 M4 is brutally fast. The S55 twin-turbo engine delivers power with an immediacy that makes every straight feel too short. The DCT is lightning fast, the chassis is capable, and with the crank hub fix and cooling upgrades, the car is a reliable track weapon. For drivers who want the most speed per dollar in a BMW, the F82 M4 is hard to beat.

Why People Hate It

The crank hub failure is a design defect that BMW should have recalled. The intercooler heat soak is frustrating on hot days. The electric power steering, while functional, cannot match the feel of the E46 or E92 hydraulic systems. And at 3,530+ lbs, the car is heavy enough that consumable costs are significant. The S55 also lacks the naturally aspirated character of the S65 V8 — it is fast but not special in the same way.

Best For

Drivers who want maximum BMW performance per dollar, time attack competitors, NASA GTS1 racers, and turbo tuning enthusiasts.

Not Ideal For

Purists who prefer naturally aspirated engines, budget-conscious drivers, or anyone who wants low-maintenance track driving.