BMW M4 GT3 (2021)

TYRES

• Slick (soft compound — qualifying), Front: 26.2 PSI, Rear: 25.8 PSI, Tyre blankets: 80°C all corners. Optimal operating window for max grip: 85–100°C (peak ~90°C). For a single hot lap, slightly lower cold pressures are used since heat buildup over 1–2 laps is minimal — target hitting the 85–95°C window within 1 lap.

ELECTRONICS

• TC1: 2, TC2: 0, ABS: 4, Engine Map: 1 (max power/qualifying map), Brake Bias: 54.5%, Brake Driver (pedal sensitivity): 100%

SUSPENSION

• // FRONT
• Ride Height: 50mm
• Wheel Rate FL / FR: 175 N/mm / 175 N/mm
• ARB: 6
• Brake Torque Multiplier: 100%
• Brake Bias: 54.5%
• // REAR
• Ride Height: 57mm
• Wheel Rate RL / RR: 155 N/mm / 155 N/mm
• ARB: 4
• Diff Preload: 60 Nm
• Diff Coast: 0.3
• Diff Power: 0.6

DAMPERS

AERO

• Front Splitter: 6, Rear Wing: 6, Brake Ducts Front: 2, Brake Ducts Rear: 3 (minimal cooling needed for single lap — prioritize low-drag aero efficiency over cooling)

KEY SETUP NOTE

• On a single banzai lap, run stiffer front wheel rates and slightly lower cold pressures than a race setup — the M4 GT3 builds front temp slowly, and with no need for tyre longevity you can run a more aggressive front ARB (6) to sharpen turn-in through the Schumacher-S without worrying about long-run front-left degradation.

TRACK GUIDE

• T1 (Yokohama-S): Brake extremely late, trail brake deep to rotate the nose — M4 GT3's strong front turn-in under trail braking is a weapon here, carry minimum speed through apex 2.
• T3 (Schumacher-S): Commit to a smooth but fast direction change; stiffer front ARB keeps platform flat — sacrifice nothing on entry, let the chassis rotate on trail-brake rather than lifting.
• T5 (Dunlop hairpin) & T11 (Bit-Kurve): Traction is everything — unwind steering early, get on power progressively; diff power at 0.6 and TC1 at 2 lets you ride the edge of wheelspin without killing exit speed.
• T13 (Veedol chicane): Use curbs aggressively (stiffer dampers absorb this) — don't scrub exit speed since it feeds the long back straight, the biggest time-gain zone on track.
• T16 (Shell) & T18 (Ford-Kurve): Late, hard braking into Shell rewards the strong brake bias setup; Ford-Kurve traction out determines stadium section entry speed — prioritize rotation before power application.