Porsche 911 RSR 2017

TYRES

• Slick, Michelin GT class compound — Front 26.5 PSI cold / Rear 26.0 PSI cold. Hot target: 27–28 PSI front, 27–27.5 PSI rear. Optimal tyre operating window: 80–95°C (peak grip ~85–90°C core temp). No tyre blankets assumed on tyre-off sessions — expect 1 lap to build temp; setup below biased slightly to accelerate front-left/right heating for a single hot lap.

ELECTRONICS

• TC: 3 (minimum needed for Parabolica/Ascari exit stability under max attack)
• ABS: 4
• Engine Braking: Medium (factory map, mid setting — 3 of 5 if adjustable)
• Brake Bias: 58.5% front (adjustable in-cockpit, base setting below)

SUSPENSION

• // FRONT
• Ride Height: 55 mm
• Wheel Rate FL / FR: 130000 N/m / 130000 N/m
• ARB: 110000 N/m
• Brake Torque Multiplier: 100%
• Brake Bias: 58.5%
• // REAR
• Ride Height: 60 mm
• Wheel Rate RL / RR: 150000 N/m / 150000 N/m
• ARB: 90000 N/m
• Diff Preload: 40 Nm
• Diff Coast: 0.5
• Diff Power: 0.3

DAMPERS

AERO

• Front splitter: 2 (of typical 0–6 range, minimal drag) — Rear wing: 3 (of 0–8 range, low downforce for Monza top speed). Brake ducts: Front 2 / Rear 3 (single-lap heat build is limited, keep ducts modest to get temp into tyres/brakes quickly rather than over-cooling).

KEY SETUP NOTE

• On a single cold-tyre flying lap the RSR's rear-biased weight and low-drag Monza wing level make the first sector chicanes (T1/2, T4/5) the danger zone before tyres are fully in window — run slightly higher front camber/lower front ARB stiffness than race trim to force faster front-left temperature build, because a cold front axle combined with low downforce will understeer hard into Rettifilo on the out-lap into the flying lap transition.

TRACK GUIDE

• Rettifilo (T1/2): Brake at the 100m board, trail hard to rotate over the first kerb — the RSR's stiff rear can snap if you carry too much curb strike speed on the second apex.
• Curva Grande (T3): Taken essentially flat in top gear if the car is settled — commit early, minimal steering correction, this is a confidence corner where low-drag setup pays off.
• Roggia (T4/5): Late, straight-line braking is critical — any trail-braking rotation here costs rear stability; get straight before turn-in.
• Lesmo 1/2: Lesmo 1 rewards aggressive front rotation on entry (use the front grip built up from earlier laps); Lesmo 2 is where mid-corner understeer bites — carry slightly less entry speed to protect exit onto the back straight.
• Ascari chicane: Ride the kerbs flat-out, minimal