Porsche 911 GT3 R (991)

TYRES

• Compound: Dry — Michelin (ACC default slick)
• Front Pressure (cold): 27.0 PSI
• Rear Pressure (cold): 26.5 PSI
• Tyre Blanket Temp: 80°C (standard ACC blanket setting)
• Optimal Operating Window (track temp, for max grip): 80–95°C front, 75–90°C rear — race-stint target window to avoid graining (<70°C) or blistering (>100°C)

ELECTRONICS

• TC1: 5
• TC2: 2
• ABS: 5
• Engine Brake / Ignition Cut: Map 3
• Brake Bias: 58.5%
• Brake Driver Sensitivity: 80%

SUSPENSION

• // FRONT
• Ride Height: 55 mm
• Wheel Rate FL / FR: 155 N/mm / 155 N/mm
• ARB: 4
• Brake Torque Multiplier: 100%
• Brake Bias: 58.5%
• // REAR
• Ride Height: 62 mm
• Wheel Rate RL / RR: 150 N/mm / 150 N/mm
• ARB: 6
• Diff Preload: 70 Nm
• Diff Coast: 0.65
• Diff Power: 0.35

DAMPERS

AERO

• Front Splitter: 5
• Rear Wing: 7
• Brake Ducts Front: 3
• Brake Ducts Rear: 3

KEY SETUP NOTE

• Zolder's combination of heavy braking into tight hairpins (T1, T4, T8) and high kerb usage punishes the GT3 R's rear-engine inertia — stiffer rear ARB (6) and elevated rear ride height (62mm) are essential to prevent snap oversteer on throttle application over kerbs, while the high coast diff lock (65%) stabilizes aggressive late-braking entries.

TRACK GUIDE

• T1 (hairpin after start/finish): Late braking rewarded, but trail-brake smoothly — the Porsche's rear weight bias means early throttle before full rotation causes snap oversteer; wait for apex confirmation.
• Kerb usage at T3/T4 (chicane): Attack kerbs with front-left only on entry — full commitment over both kerbs unsettles the rear dampers; stay slightly left of the aggressive line to protect rear stability.
• T8/T9 (Butte complex): This is where lap time is won — late apex, delay throttle 0.1s longer than feels natural, then exit flat; the long run to start/finish rewards traction over outright rotation.
• Fuel/tyre management: Save rear tyres by rolling slightly more speed through T6 (Kleine Chicane) rather than trail-braking hard — rear deg accelerates quickly with aggressive diff lock settings.
• Overtaking zone: Main straight into T1 is the only clean passing opportunity — prioritize exit traction from T9 over ultimate min-speed through the corner.