Porsche 911 GT3 Cup 2017

TYRES

• Slick (Cup spec), front 22.5 PSI cold / rear 22.0 PSI cold. No tyre blankets assumed — treat lap 1 as warm-up, push from lap 2. Optimal operating window ~85–95°C for peak slick grip; target hot pressures ~27–28 PSI front, ~26–27 PSI rear once in that window.

ELECTRONICS

• TC: N/A (not fitted)
• ABS: N/A (not fitted)
• Engine Braking: fixed (no adjustment on this car)
• Brake Bias: 58.5% front (rearward of typical GT3 to manage front lockup under trail-braking)

SUSPENSION

• // FRONT
• Ride Height: 55 mm
• Wheel Rate FL / FR: 130000 / 130000 N/m
• ARB: 14000 N/m
• Brake Torque Multiplier: 100%
• Brake Bias: 58.5%
• // REAR
• Ride Height: 60 mm
• Wheel Rate RL / RR: 105000 / 105000 N/m
• ARB: 10000 N/m
• Diff Preload: 60 Nm
• Diff Coast: 0.5
• Diff Power: 0.3

DAMPERS

AERO

• Fixed rear wing (one-make, no adjustment) — run as low-drag as ride height/mechanical setup allows. No front splitter adjustment. No brake ducts on this car.

KEY SETUP NOTE

• Monza rewards minimum drag and a stable rear over the Ascari kerbs far more than outright mechanical grip — keep ride heights as low as the chicane kerb strikes allow, and bias the diff coast slightly open (0.5) so the light rear doesn't snap on trail-brake into the two chicanes; the lap is won on a fearless, late brake release into Parabolica, not on mid-corner speed.

TRACK GUIDE

• T1/2 Rettifilo: brake at the 100m board (adjust ±3m for your reaction), trail off hard, get the nose rotated over the second kerb — don't square it off, carry rotation through both apexes.
• Curva Grande: full throttle, minimal lift if any — stay right-side of the track early to open the radius, rear tyre temps matter here for Roggia braking.
• Roggia chicane: heavier braking zone than T1, straight-line stability is king — brake in a straight line first, then turn, or the light front will lock.
• Lesmo 1/2: sacrifice a fraction of Lesmo 1 entry speed for a clean, early-rotated exit that sets up Lesmo 2 — Lesmo 2 exit speed is worth far more down the back straight.
• Ascari: treat as one continuous flowing motion, ride the kerks flat, don't lift between the three direction changes — a twitch here costs the whole straight after.
• Parabolica: this is the lap-time corner — brake later than feels safe, rotate early with a tight-radius entry, unwind the wheel progressively to maximize exit speed onto the pit straight.

THEORETICAL BEST LAP

• 1:47.500 — optimal sector composite, dry track, low-drag setup, no traffic.

REAL WORLD REC