McLaren 720S GT3 (2019)

TYRES

• Dry compound (default GT3 slick), Front 26.8 PSI, Rear 26.2 PSI cold set. Blanket temp: 80°C both axles. Optimal operating window for maximum grip: 85–100°C (core), peak grip band ~90–95°C. For a single hot lap, aim to have tyres cross the start line already at 85°C+ — use an out-lap with moderate lateral loading and a couple of firm brake applications to spike temp before the timed lap.

ELECTRONICS

• TC1: 4
• TC2: 2
• ABS: 5
• Engine Map: 1 (max power, qualifying map)
• Brake Bias: 54.5%
• Brake Driver Exponent: 80%

SUSPENSION

• // FRONT
• Ride Height: 52mm
• Wheel Rate FL / FR: 185 / 185 N/mm
• ARB: 8
• Brake Torque Multiplier: 100%
• Brake Bias: 54.5%
• // REAR
• Ride Height: 58mm
• Wheel Rate RL / RR: 165 / 165 N/mm
• ARB: 6
• Diff Preload: 60 Nm
• Diff Coast: 0.6
• Diff Power: 0.3

DAMPERS

AERO

• Front Splitter: 1
• Rear Wing: 3
• Brake Ducts Front: 2
• Brake Ducts Rear: 3
• Downforce philosophy: minimum legal drag configuration — low wing for straight-line speed on the two long straights, rear ARB and diff compensate for the reduced rear stability.

KEY SETUP NOTE

• The 720S GT3's chassis rewards a stiffer front-end/ARB setup with soft-ish low rear wing for Monza — this maximizes front rotation into the chicanes without sacrificing top speed, but you must lean on differential coast lock (0.6) and careful throttle modulation at Lesmo 2 and Parabolica exit to avoid snap oversteer with so little rear wing.

TRACK GUIDE

• Turn 1/2 (Rettifilo): brake as late as physically possible from 340km/h+, trail brake into the first apex, use the chicane kerbs aggressively — the stiff front ARB keeps the car flat, don't lift mid-chicane or you lose the rotation window.
• Curva Grande (T3): almost full throttle, minimal steering correction — trust the low-drag rear wing; any hesitation here costs top speed down to the Roggia chicane.
• Roggia (T4/5): identical technique to T1/2 — brake stability is everything, use ABS 5 to shorten braking distance without lockup, then get back to power early for the run to Lesmo.
• Lesmo 1 & 2: Lesmo 1 rewards late apex and trail-braking for rotation; Lesmo 2 is where understeer creeps in — be patient on throttle, let the front settle before committing, since exit speed here feeds the entire back straight.
• Ascari chicane: treat it as one continuous motion — use the kerbs to unsettle the car intentionally for rotation, but the stiffened dampers (fast bump 6F/5R) keep it from bottoming out; smooth hands, no sudden inputs.
• Parabolica: this is the lap