Porsche 911 (992) GT3 Cup — ABS

TYRES

• Compound: Wet
• Front Pressure: 29.0 PSI cold (target 30-31 PSI hot)
• Rear Pressure: 28.0 PSI cold (target 29-30 PSI hot)
• Camber F: -3.2° / R: -2.4°
• Toe F: 0.10° out / R: 0.15° in
• Optimal operating temp: 65-80°C for maximum wet grip (do not let fronts exceed 85°C on the drying line)
• Note: No tyre blankets in AC Evo

ELECTRONICS

• TC: 6 (wet — rear-engine traction needs a safety net on Eau Rouge exit and La Source)
• ABS: 5 (Cup car ABS — keeps late braking stable on the wet line into Les Combes and Bus Stop)
• Brake Magic / Engine Braking: Not adjustable on this car
• ERS: Not applicable
• Brake Bias: 56.0% (see Suspension section)

SUSPENSION

• // FRONT
• Ride Height: 62 mm
• Wheel Rate FL / FR: 120,000 N/m / 120,000 N/m
• ARB: 24,000 N/m
• Brake Torque Multiplier: 100%
• Brake Bias: 56.0%
• // REAR
• Ride Height: 74 mm
• Wheel Rate RL / RR: 105,000 N/m / 105,000 N/m
• ARB: 18,000 N/m
• Diff Preload: 40 Nm
• Diff Coast: Not adjustable (fixed by homologation, effective 0.4)
• Diff Power: Not adjustable (fixed by homologation, effective 0.3)

DAMPERS

AERO

• Front Splitter / Dive Planes: Fixed (Cup car)
• Rear Wing: Setting 8 (high wing for wet stability: Pouhon, Blanchimont, and Eau Rouge/Raidillon need rear grip, and the straight-line speed loss is acceptable in the wet)
• Downforce Level: High
• Brake Ducts: Fully open front, mid-open rear (keeps the wet tyres and brakes from overcooling)

KEY SETUP NOTE

• The 992 Cup is rear-engined and snaps on throttle in the wet, so keep the rear soft and compliant (105,000 N/m springs, 18,000 N/m ARB) and run the high rear wing. Aggressive rotation comes from trail braking into the apex, not a stiff rear that makes the pendulum worse. Use TC 6 as a net on Raidillon exit, but not so high that it kills drive up Kemmel.

TRACK GUIDE

• La Source: Brake very early in the wet (roughly 100 m earlier than dry) on the damp inside line. Trail the brake to the apex and be patient on throttle, since the exit is heavily trac-limited with a rear-engine car.
• Eau Rouge / Raidillon: Stay off the standing water on the racing line and favour the drier line slightly left. Commit with a smooth, small steering input, keep the throttle at about 70-80%, and let the high rear wing keep the car planted over the crest. Tank-slappers happen when you lift mid-corner.
• Les Combes / Bus Stop: Late brake from Kemmel, but wet braking distances are far longer, so use ABS 5 and release progressively. Rotate with trail braking, then pick up the throttle once the car is straight.
• Pouhon: Fast double-left where lateral loads are high. Turn in earlier and tighter than the dry line, stay off the standing water, and keep the car balanced mid-corner. Do not lift suddenly or the rear will come around.
• Race management: Run a smooth, wide line to protect the tyres on the long wet stints. Avoid excessive wheelspin out of La Source, Bus Stop, and Les Combes. Use the kerbs only where dry, as wet kerbs are slippery and unsettle the rear.