McLaren 650S GT3 (2018)

TYRES

• Slick (Dry) — Front: 26.8 PSI cold, Rear: 26.3 PSI cold
• Tyre blankets: 80°C all four (standard ACC pre-heat)
• Optimal operating window for max grip: 85–100°C (peak grip ~90°C), core temp target 88–95°C for qualifying single lap

ELECTRONICS

• TC1: 3 (minimal — Monza is low-lateral-load, high traction demand on exits, aggressive driver can manage low TC)
• TC2: 1
• ABS: 5
• Engine Braking / Brake Magic: Medium-low, favour rotation into chicanes
• Brake Bias: 54.5% (forward bias for late braking stability into T1 and Roggia)
• Engine Map: 1 (max power, quali — fuel irrelevant)

SUSPENSION

• // FRONT
• Ride Height: 54 mm
• Wheel Rate FL / FR: 178 N/mm / 178 N/mm
• ARB: 6
• Brake Torque Multiplier: 100%
• Brake Bias: 54.5%
• // REAR
• Ride Height: 60 mm
• Wheel Rate RL / RR: 162 N/mm / 162 N/mm
• ARB: 4
• Diff Preload: 60 Nm
• Diff Coast: 0.55
• Diff Power: 0.35

DAMPERS

AERO

• Front Splitter: 1 (minimum — reduce drag for top speed on straights)
• Rear Wing: 2 (low downforce, just enough for Parabolica/Ascari stability)
• Brake Ducts: Front 3 / Rear 2 (single lap — moderate cooling only, avoid excess drag)

KEY SETUP NOTE

• Monza rewards minimum drag above all else — every extra click of wing costs time on the two long straights, but the McLaren 650S needs strong front-end bite for the two chicanes (T1/2 and T4/5) to rotate quickly without scrubbing speed; the low rear ARB and softer power diff keep the rear planted for Parabolica exit onto the pit straight, where lap time is truly won.

TRACK GUIDE

• T1/2 (Rettifilo): Brake as late as possible from 340km/h+, trail brake deep to rotate the nose; attack the kerbs flat — the McLaren's platform is stable enough to ride them aggressively for a tighter exit line.
• Curva Grande (T3): Taken nearly flat in 6th — trust the low-drag aero setup; any lift here costs more time than it gains, stay committed on the throttle through the sweep.
• Roggia (T4/5): Second heavy braking zone — brake bias slightly forward helps rotate the rear under trail-braking; get back to power early for the run to Lesmo.
• Lesmo 1 & 2 (T8/9): Compromise corners — sacrifice a little Lesmo 1 entry speed for a cleaner, straighter exit through Lesmo 2, since exit speed here feeds the entire back straight to Ascari.
• Ascari (T11/12/13): Flat, stable ride over the kerbs is critical — minimize steering correction, use the kerbs to shorten the line, and carry speed through to set up Parab

TYRES

• Dry compound (Slick Medium — standard ambient 20–26°C track temp). Cold pressures: Front 26.8 PSI, Rear 26.3 PSI. Blanket temp: 80°C. Optimal operating window for maximum grip: 80–95°C (ideal peak ~87°C) across all four tyres — monitor rears closely on long runs as Monza's low-downforce, high-throttle-exposure layout builds heat quickly through Curva Grande and Parabolica.

ELECTRONICS

• TC1: 4 (low — Monza favours minimal intervention for exit speed, McLaren 650S has strong mechanical traction)
• TC2: 3
• ABS: 5
• Engine Braking / Brake Migration: Medium-low engine braking for stability into Rettifilo/Roggia chicanes
• Brake Bias: 54.5% (race trim, moves slightly rearward from qualy 55.5% to manage front tyre deg over stint)

SUSPENSION

• // FRONT
• Ride Height: 55mm
• Wheel Rate FL / FR: 145000 N/m / 145000 N/m
• ARB: 6
• Brake Torque Multiplier: 100%
• Brake Bias: 54.5%
• // REAR
• Ride Height: 60mm
• Wheel Rate RL / RR: 135000 N/m / 135000 N/m
• ARB: 4
• Diff Preload: 60 Nm
• Diff Coast: 0.35
• Diff Power: 0.55

DAMPERS

AERO

• Front Splitter: 1 (minimum practical — reduce drag for straights)
• Rear Wing: 2
• Downforce Level: Low-drag configuration prioritising top speed on the two long straights and Parabolica exit
• Brake Ducts: Front 3, Rear 2 (moderate cooling — race stint heat management without excess drag)

KEY SETUP NOTE

• The 650S GT3 rewards a low-drag, front-biased mechanical setup at Monza — because top speed down both straights and out of Parabolica dominates laptime far more than mid-corner downforce, run the lowest wing you can control through Ascari's kerbs, and lean on front spring/ARB stiffness plus diff coast lock to force rotation into the chicanes without needing aero grip you'll pay for on the straights.

TRACK GUIDE

• Rettifilo (T1/2): Brake as late as possible in a straight line, trail slightly to rotate the nose over the first kerb — carrying too much speed onto the exit kerb will unsettle the rear for the run to Curva Grande.
• Curva Grande (T3): Committed, near-flat in high gear — trust the low-drag setup; any lift costs more time here than anywhere else on track.
• Roggia (T4/5): Same principle as T1/2 — brake in a straight line, use the stiffer front to rotate quickly, get back to power early since this feeds into Lesmo 1.
• Lesmo 1 & 2: Lesmo 1 rewards late trail-braking for rotation; Lesmo 2 is where understeer creeps in — be patient on throttle, straighten the wheel before feeding power to protect exit speed onto the back straight.
• Ascari & Parabolica: