BMW M4 GT3 (2021)

TYRES

• Compound: Dry — Medium (standard GT3 slick)
• Front Pressure: 27.2 PSI (cold)
• Rear Pressure: 26.9 PSI (cold)
• Tyre Blanket Temp: 80°C (standard ACC blanket setting)
• Optimal Operating Window: 80–95°C for front and rear — peak grip at ~87°C; avoid exceeding 100°C to prevent thermal degradation over race stints.

ELECTRONICS

• TC1: 4
• TC2: 2
• ABS: 4
• Engine Map: 2 (race fuel/power balance for stint length)
• Brake Bias: 54.5%
• Brake Driver (pedal sensitivity): 65%

SUSPENSION

• // FRONT
• Ride Height: 55mm
• Wheel Rate FL / FR: 165000 N/m / 165000 N/m
• ARB: 6 (scale 1–10)
• Brake Torque Multiplier: 100%
• Brake Bias: 54.5%
• // REAR
• Ride Height: 62mm
• Wheel Rate RL / RR: 145000 N/m / 145000 N/m
• ARB: 5 (scale 1–10)
• Diff Preload: 60 Nm
• Diff Coast: 0.4
• Diff Power: 0.6

DAMPERS

AERO

• Front Splitter: 5
• Rear Wing: 6
• Brake Ducts Front: 3
• Brake Ducts Rear: 3
• Downforce Level: Medium-high — biased for Paddock Hill stability and Clearways exit speed without sacrificing Druids traction.

KEY SETUP NOTE

• Brands Hatch's blend of heavy braking (Paddock Hill), tight traction zones (Druids), and high-speed direction change (Clearways) demands a slightly stiffer front ARB than usual M4 GT3 baseline to control dive under late braking, while keeping rear diff power locking moderate (0.6) to avoid snap oversteer on Druids exit — critical for aggressive, late-braking driving style over race distance.

TRACK GUIDE

• Paddock Hill Bend: brake late but straight-line; trail brake slightly into apex — downhill compression loads the front, so avoid over-slowing mid-corner.
• Druids: sacrifice outright min-speed for a cleaner, earlier throttle application — traction out of Druids defines Cooper Straight speed and overtaking opportunity.
• Graham Hill Bend: use trail braking to rotate the car early; aggressive drivers can carry more entry speed here than feels natural due to camber assistance.
• McLaren Bend: committed single-apex approach — lift-and-reapply throttle smoothly to manage mid-corner lateral loads without upsetting rear tyre temps.
• Clearways/Clark Curve: this corner makes the lap — carry max minimum speed on exit onto the front straight; a wide, late apex maximizes exit trajectory and straight-line speed for the following lap.

THEORETICAL BEST LAP

• 1:24.800 — optimal sector composite, BMW M4 GT3, dry conditions, low fuel, soft-medium tyre state (simulated reference).

REAL WORLD RECORD