Porsche 911 GT3 R (991)

TYRES

• Compound: Dry — C6 (soft qualifying compound)
• Front pressure: 26.3 PSI cold
• Rear pressure: 25.8 PSI cold
• Tyre blanket temp: 80°C (front and rear)
• Optimal operating window: 85–100°C tread temp for peak grip on C6 compound. Qualifying lap should aim to hit tyres already near 90°C by T1 — use aggressive weaving/braking on the out-lap to build temp fast.

ELECTRONICS

• TC1: 3
• TC2: 1
• ABS: 5
• Engine Brake / Brake magic: 4
• Brake Bias: 54.5%

SUSPENSION

• // FRONT
• Ride Height: 55
• Wheel Rate FL / FR: 185000 / 185000
• ARB: 6
• Brake Torque Multiplier: 100
• Brake Bias: 54.5
• // REAR
• Ride Height: 62
• Wheel Rate RL / RR: 155000 / 155000
• ARB: 8
• Diff Preload: 75
• Diff Coast: 0.55
• Diff Power: 0.35

DAMPERS

AERO

• Front splitter: 6
• Rear wing: 7
• Brake ducts: F3 / R3 (low drag priority for Kemmel/Spa straights, still enough cooling for single-lap attack)

KEY SETUP NOTE

• Spa's long straights punish excess rear wing while Eau Rouge/Raidillon punish insufficient rear stability at 280km/h+ — this setup runs slightly leaner rear wing (7) than typical GT3 Spa baseline, trading a fraction of Eau Rouge confidence for major straight-line speed gain into Les Combes and down Kemmel, which is where qualifying laps are won at this track.

TRACK GUIDE

• Eau Rouge/Raidillon flat in quali trim: commit full throttle from La Source exit, trust the rear stiffness — lifting costs 3-4 tenths minimum and unsettles the whole lap.
• La Source hairpin: brake late but straight-line only, rotate on entry with trail-brake, prioritize exit traction — it feeds the longest flat-out section of the lap.
• Les Combes braking zone: this is your biggest overtake-the-clock zone — brake as late as possible in a straight line, use the high downforce to carry extra entry speed, don't compromise the double-apex.
• Pouhon: a full-throttle-adjacent high-speed left-hander — minimum steering correction, smooth arc, this corner rewards a planted rear end from the stiffer rear ARB setup.
• Bus Stop chicane: final lap-time chance — sacrifice the kerb-heavy inside line slightly to protect exit speed onto the front straight, since final sector exit speed carries all the way to the line.

THEORETICAL BEST LAP

• 2:16.800 — theoretical optimal based on best sector times, dry, low-fuel qualifying simulation, no traffic

REAL WORLD RECORD

• No official record (GT3 991 GT3 R class-specific lap records are not centrally certified at Spa GP configuration)

SIM RACING RECORD

• 2:17.900 — ACC, GT3 class, dry