BMW M4 GT3

TYRES

• Slick — Medium compound, Front 27.5 PSI, Rear 27.3 PSI cold set. Blanket temp 80°C. Optimal operating window 85–100°C for peak grip; race stint target 90°C core to manage degradation over stint length.

ELECTRONICS

• TC1: 4, TC2: 3, ABS: 4, Engine Braking/Brake Magic: Medium (5/10), Brake Bias: 54.5% front (in-cockpit adjustable 53.5–56.0% range for race)

SUSPENSION

• // FRONT
• Ride Height: 55 mm
• Wheel Rate FL / FR: 165000 N/m / 165000 N/m
• ARB: 120 N/m
• Brake Torque Multiplier: 100%
• Brake Bias: 54.5%
• // REAR
• Ride Height: 60 mm
• Wheel Rate RL / RR: 145000 N/m / 145000 N/m
• ARB: 95 N/m
• Diff Preload: 60 Nm
• Diff Coast: 0.5
• Diff Power: 0.65

DAMPERS

AERO

• Front Splitter: 6 clicks, Rear Wing: 5 (of 10), Downforce Level: Medium-High, Brake Ducts: Front 4 / Rear 3

KEY SETUP NOTE

• Campsa (T10) demands rear ride height and rear wing stability above all else — running too low rear ride height or too soft rear ARB will cause the M4 to porpoise/skip through the banking at speed, costing confidence and lap time exiting onto T11; prioritize this over ultimate T1 traction if a compromise is forced.

TRACK GUIDE

• T1 Elf: brake late but straight-line, get rotation started before turn-in — this car's diff (0.65 power) rewards early throttle pickup for T2 exit speed.
• T3 Renault: commit to a stable mid-corner platform — trail brake lightly, avoid trailing too deep or the rear ARB (95 N/m) setup will let it step out on exit.
• T10 Campsa: treat as nearly flat — lift only fractionally if rear feels light; this is the biggest lap time differentiator at Barcelona in the M4.
• T13/14 hairpin complex: late apex, get the car pointed early for traction — TC2 at 3 helps put power down without excessive wheelspin on exit.
• T16 New Holland: carry max minimum speed — exit speed onto the main straight is worth more than any other single corner exit on this lap; sacrifice ultimate entry speed for a clean, full-throttle exit.

THEORETICAL BEST LAP

• 1:44.200 — theoretical optimal sector composite, BMW M4 GT3, dry/green track, LMU physics reference.

REAL WORLD RECORD

• No official record — GT3-specific Barcelona pole/lap records vary by series (GT World Challenge Europe ~1:45s bracket) and are not standardized as a single "record" for this exact car/class combo.

SIM RACING RECORD

• 1:43.900 — approximate best community hotlap estimate, Le Mans Ultimate, GT3 class, dry/optimal