Porsche 911 GT3 R (991)

TYRES

• Compound: Dry Slick (C7 / ACC default GT3 dry compound)
• Front Pressure: 26.8 PSI (cold, targeting 27.5–28.0 PSI hot)
• Rear Pressure: 26.3 PSI (cold, targeting 27.0–27.5 PSI hot)
• Optimal Operating Temp: 80–95°C (peak grip window across the tread for GT3 slicks; front carcass ideally 85–90°C for single-lap qualifying peak)
• Tyre Blanket Temp: 80°C (max legal preheat, both axles)

ELECTRONICS

• TC1: 4
• TC2: 1
• ABS: 5
• Engine Braking / Brake Migic: N/A (fixed ECU map, no engine braking control on GT3 Porsche)
• Engine Map: 1 (qualifying power map)
• Brake Bias: 58.5% (forward-biased for late-braking stability into T1/T5)
• Brake Driver Sensitivity: 85%

SUSPENSION

• // FRONT
• Ride Height: 53 mm
• Wheel Rate FL / FR: 165000 N/m / 165000 N/m
• ARB: Position 4 (softer front to aid rotation)
• Brake Torque Multiplier: 100%
• Brake Bias: 58.5%
• // REAR
• Ride Height: 62 mm
• Wheel Rate RL / RR: 155000 N/m / 155000 N/m
• ARB: Position 6 (stiffer rear to control pendulum effect)
• Diff Preload: 70 Nm
• Diff Coast: 0.65
• Diff Power: 0.35

DAMPERS

AERO

• Front Splitter: 6
• Rear Wing: 7
• Brake Ducts Front: 2 (minimal cooling needed for single lap, prioritize aero efficiency)
• Brake Ducts Rear: 2
• Downforce Philosophy: Slightly wing-heavy setup for T3/T4 high-speed stability and T5 braking confidence — sacrifice a fraction of straight speed for rotation confidence at Rindt Kurve.

KEY SETUP NOTE

• The 911 GT3 R's rear-engine polar inertia makes T5 (Jochen Rindt Kurve) the defining corner of the lap — trail-brake too aggressively and the rear will snap late in the corner; the stiffer rear ARB (6) and firmer rear ride height (62mm) are tuned specifically to keep the rear planted through this heavy-braking, off-camber-feeling right-hander while still allowing the front to rotate early in slower corners like T1/T2/T9.

TRACK GUIDE

• T1 Castrol Kurve: Brake as late as possible in a straight line — trail brake only slightly, the Porsche's front will bite hard; carry rotation but don't provoke rear on entry, this is a traction corner exiting onto the uphill sector.
• T3/T4 Schlossgold/Rauch: Committed, near-flat sequence — car goes light over the crest at T4, stay smooth on the wheel, any lift or correction here costs massive time; trust the rear wing setup.
• T5 Jochen Rindt Kurve: The most critical braking