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

TYRES

• Dry compound (Slick Medium — standard Monza tarmac temp 26–34°C track temp)
• Front pressure: 27.0 PSI cold
• Rear pressure: 26.7 PSI cold
• Optimal operating window: 80–95°C (peak grip 85–90°C); blanket temp 80°C front/rear

ELECTRONICS

• TC1: 4
• TC2: 2
• ABS: 4
• Engine Braking / Brake Magic: Medium (3)
• Brake Bias: 58.5% (adjustable -1 to +1 trackside for late-race lockup as fuel burns off)

SUSPENSION

• // FRONT
• Ride Height: 55 mm
• Wheel Rate FL / FR: 165 N/mm / 165 N/mm
• ARB: 6
• Brake Torque Multiplier: 100%
• Brake Bias: 58.5%
• // REAR
• Ride Height: 65 mm
• Wheel Rate RL / RR: 150 N/mm / 150 N/mm
• ARB: 5
• Diff Preload: 65 Nm
• Diff Coast: 0.4
• Diff Power: 0.6

DAMPERS

AERO

• Front Splitter: 2
• Rear Wing: 3
• Brake Ducts: Front 3 / Rear 3
• Downforce priority: minimum drag configuration for top speed down Monza's long straights; splitter kept low to balance front grip for chicane rotation without adding excess drag

KEY SETUP NOTE

• Monza punishes drag more than any other GT3 circuit — every click of rear wing above 3 costs measurable time on the main straight and Parabolica exit; the M4 GT3's strong mechanical platform and torque-rich inline-6 let you run this low-wing setup while leaning on diff preload and rear ARB stiffness for stability over the Ascari and Lesmo kerbs rather than aero.

TRACK GUIDE

• T1/2 (Rettifilo): Brake deep but straight-line only — trail braking here with low front load risks locking the outside front; use the ABS to find the limit, hit the chicane kerbs flat and committed, unsettling the car slightly is fine if the rear platform (stiffer rear ARB) absorbs it.
• T3 (Curva Grande): Taken essentially flat in quali trim, in race trim lift fractionally if tyres are past 60% life — rear tyre deg here is the first sign of overdriving.
• T4/5 (Roggia): Second heavy brake zone — late braking reward is high but diff coast setting (0.4) helps rotate the rear on entry without snap oversteer.
• Lesmo 1/2: Sacrifice a little Lesmo 1 entry speed for a cleaner, straighter Lesmo 2 exit — this feeds the full back straight to Ascari, where lap time compounds.
• Ascari chicane: Flat ride height and the mid-stiff damper rebound settings keep the car planted over the kerbs — carry minimum speed loss through direction changes, prioritize exit traction over entry speed.
• Parabolica: The lap-defining corner — late apex, progressive throttle application using the 0.6 power diff setting to put power down without wheelspin, carrying max exit spe