BMW M4 GT3

TYRES

• Slick (Dry) — Front: 26.5 PSI cold, Rear: 26.3 PSI cold
• Hot target: ~27.0 PSI F / 26.8 PSI R once up to temperature
• Optimal operating window: 85–95°C (peak grip around 90°C)
• Tyre blankets (if session allows): set to 80°C — expect cold first-lap grip regardless, build temp through Lesmos and Ascari before Parabolica attack lap

ELECTRONICS

• TC1: 3
• TC2: 1
• ABS: 3
• Brake Bias: 54.5% front (adjustable in-cockpit, shift rearward under braking load if front locks on chicane entries)
• Engine Braking: Medium (if adjustable per car model — default map)

SUSPENSION

• // FRONT
• Ride Height: 55 mm
• Wheel Rate FL / FR: 145000 N/m / 145000 N/m
• ARB: 58000 N/m
• Brake Torque Multiplier: 100%
• Brake Bias: 54.5%
• // REAR
• Ride Height: 58 mm
• Wheel Rate RL / RR: 130000 N/m / 130000 N/m
• ARB: 42000 N/m
• Diff Preload: 60 Nm
• Diff Coast: 0.4
• Diff Power: 0.6

DAMPERS

AERO

• Front Splitter: 1 (minimum, reduce drag)
• Rear Wing: 2 (low downforce — Monza top-speed priority)
• Brake Ducts: Front 3 / Rear 3 (single lap, less cooling need than race stint)

KEY SETUP NOTE

• Monza rewards minimum drag above all else — this low-wing, soft-ARB-rear setup sacrifices some Lesmo/Ascari stability for straight-line speed on the two long straights and Parabolica exit; the M4's efficient aero shape means you lose less in the chicanes than you gain on the straights, but it demands early, confident trail-braking to rotate the car since mechanical grip now does more of the work than aero.

TRACK GUIDE

• T1/2 (Rettifilo): Brake at the 100m board, very late and hard — trail brake deep into T1 to rotate, ride the kerk at the chicane exit flat-out, don't lift over it.
• T3 (Curva Grande): Taken essentially flat in 6th — commit fully, this is a courage corner, not a setup corner, minor lift only if traffic.
• T4/5 (Roggia): Second heavy brake zone from 300km/h+ — brake in a straight line, release progressively through the chicane, the low-wing setup means more respect needed under brakes here.
• Lesmo 1/2: Lesmo 1 wants aggressive early turn-in using front grip for rotation; Lesmo 2 is where understeer bites — be patient on throttle, exit speed here feeds the entire back straight to Ascari.
• Ascari chicane: Flat ride over the kerbs is critical — carry momentum through all three apexes smoothly, sacrificing a fraction of entry speed for a clean, stable exit pays off hugely onto the straight.
• Parabolica: The lap-defining corner — late apex, patient on throttle application, maximum exit speed matters more than entry speed since it feeds the longest straight into the pit/start-finish.