BMW M4 GT3 (2021)

TYRES

• Compound: Dry — Slick (ACC default compound)
• Front Pressure: 26.6 PSI (cold set)
• Rear Pressure: 26.3 PSI (cold set)
• Tyre Blanket Temp: 70°C (front and rear)
• Optimal Operating Window: 80–95°C for maximum grip (peak ~87°C); qualifying lap should target hitting this window within 1–2 laps out

ELECTRONICS

• TC1: 3
• TC2: 0
• ABS: 4
• Engine Braking / Brake Magic: 4 (default mid setting)
• Brake Bias: 58.5% (front)

SUSPENSION

• // FRONT
• Ride Height: 50mm
• Wheel Rate FL / FR: 165000 N/m / 165000 N/m
• ARB: 6
• Brake Torque Multiplier: 100%
• Brake Bias: 58.5%
• // REAR
• Ride Height: 58mm
• Wheel Rate RL / RR: 150000 N/m / 150000 N/m
• ARB: 4
• Diff Preload: 60 Nm
• Diff Coast: 0.3
• Diff Power: 0.6

DAMPERS

AERO

• Front Splitter: 2
• Rear Wing: 2
• Downforce Level: Minimum-drag configuration for top speed on straights
• Brake Ducts Front: 4
• Brake Ducts Rear: 3

KEY SETUP NOTE

• Monza rewards minimum drag above all else — every extra click of rear wing costs more down the two straights than it gains in the chicanes; run the lowest wing you can stabilize over the Ascari and Ascari kerbs with damper/ARB tuning rather than aero, since three of Monza's seven corners are low-speed chicanes where mechanical grip and platform stability matter more than downforce.

TRACK GUIDE

• T1/2 (Rettifilo): Brake as late as physically possible from 330+ km/h — trail brake deep into the chicane; the M4's stable front end allows late initiation. Use the entry kerb aggressively but keep the car flat on exit to protect line into Curva Grande.
• T3 (Curva Grande): Taken essentially flat or with minimal lift in quali trim; commit early — this is a confidence corner, not a technical one. Rear stability under high lateral load is key, hence measured rear ARB.
• T4/5 (Roggia): Second heavy braking zone — similar late-brake technique to T1. Front grip on turn-in matters most; avoid trail-braking too aggressively into the second part or you'll lose rotation.
• Lesmo 1/2: Lesmo 1 rewards trail-braking for rotation; Lesmo 2 is where understeer creeps in — get the car rotated early on entry so you can get full power down for the run to the Ascari kerbs.
• Ascari Chicane: Ride the kerbs flat and committed — this is where lap time is made or lost with a stable, low-wing setup; a twitchy rear here costs more than the straight-line gain from less wing.
• Parabolica: The most important corner on the track for lap time — a wide, patient entry with a late apex maximizes exit speed onto the front straight. Sacrifice a tenth on entry to g