Mercedes-AMG GT4

TYRES

• Compound: Slick (Medium) – race stint, balanced deg vs. grip
• Optimal operating temperature: 85–95°C (target 90°C core)
• Front pressure: 1.85 bar (hot target 2.05 bar)
• Rear pressure: 1.80 bar (hot target 2.00 bar)
• Tyre blanket temp: N/A (not applicable in AMS2 GT4)

ELECTRONICS

• TC: 3 (scale 1–6)
• ABS: 3 (scale 1–5)
• Engine Braking / Brake Magic: N/A (not available on GT4)
• Brake Pressure: 95%
• Brake Bias: F: 58% / R: 42%

DRIVETRAIN

• Fuel Map: Map 1 – Standard. Full power delivery for aggressive exits; lift-and-coast on Turn 1 and the backstraight to hold the fuel window.
• Gear Ratios:
• 1st: 3.82
• 2nd: 2.58
• 3rd: 1.86
• 4th: 1.43
• 5th: 1.15
• 6th: 0.95
• Final Drive: 3.50

SUSPENSION

• // FRONT
• Ride Height: 62 mm
• Wheel Rate FL / FR: 130,000 N/m / 130,000 N/m
• ARB: 95,000 N/m
• Brake Torque Multiplier: 95%
• Brake Bias: F: 58% / R: 42%
• // REAR
• Ride Height: 68 mm
• Wheel Rate RL / RR: 115,000 N/m / 115,000 N/m
• ARB: 70,000 N/m
• Diff Preload: 55 Nm
• Diff Coast: 0.4
• Diff Power: 0.6

DAMPERS

AERO

• Front Splitter: Level 3 (of 1–5)
• Rear Wing: 6° (mid setting, balances drag on the long straights against rear stability)
• Downforce Level: Medium (~55% of max)
• Brake Ducts: Front 2 / Rear 1 (hold discs below 650°C over the stint)

KEY SETUP NOTE

• The GT4 is front-heavy and understeers on aggressive turn-in. The slightly softer rear wheel rate, lower coast lock (0.4) and stiffer front ARB sharpen rotation on the slow Turn 1/2 and infield sections. Keep the rear pressure 0.05 bar below the front so the rears hold temperature through hard kerb hits without overheating over a long stint.

TRACK GUIDE

• Turn 1 is the main overtaking zone: brake late at the 100 m board, trail-brake deep to rotate the car, and aim for the apex kerb. Lift early in the final laps to save fuel and tyres.
• Turns 2–4 (infield section): use the kerbs aggressively on the exit of Turn 2 for rotation, but avoid the high inside kerbs that unsettle the rear. Be patient on the throttle until the car is straight to protect rear tyre life.
• Turn 6 to the infield complex: carry momentum and keep the car tight on the inside line. The pit-lane side kerb is smooth enough to attack for maximum rotation.
• The long straights (backstraight and main straight) are where lap time is won through exit speed. Prioritise a clean, straight-line exit onto both using Diff Power 0.6 and TC 3.
• Tyre management: the rears degrade first on long stints. Short-shift out of the slow corners in the middle stint and smooth your throttle application to preserve rear grip for the final laps.