Toyota GR86

TYRES

• Dry compound (GR86 spec Toyo tyre), Front 30.5 PSI, Rear 29.5 PSI (hot target 31–33 PSI after 3–4 laps). Optimal operating window for max grip: 85–95°C. No tyre blankets permitted (cold start — build temp over out-lap with moderate weaving and early brake pressure).

ELECTRONICS

• TC: 4 (reduce to 3 once tyres cross 70°C for better rear rotation)
• ABS: Off (this car has no ABS — brake modulation is manual; if assist present in-sim keep at 1 minimum)
• Engine Braking / Brake Magic: N/A (fixed ECU, no adjustable engine braking map)
• Brake Bias: 58% front

SUSPENSION

• // FRONT
• Ride Height: 105 mm
• Wheel Rate FL / FR: 24000 N/m / 24000 N/m
• ARB: 14000 N/m
• Brake Torque Multiplier: 100%
• Brake Bias: 58%
• // REAR
• Ride Height: 110 mm
• Wheel Rate RL / RR: 20000 N/m / 20000 N/m
• ARB: 9000 N/m
• Diff Preload: 40 Nm
• Diff Coast: 0.5
• Diff Power: 0.6

DAMPERS

AERO

• No adjustable wing (fixed OEM rear lip spoiler). Downforce level: fixed/stock. No brake ducts adjustment available on this car.

KEY SETUP NOTE

• Oschersleben's long Turn 1 braking zone and tight Turn 5/6 chicane punish a loose rear under trail-braking — run slightly stiffer rear ARB (9000 N/m) and 0.5 coast diff to keep rear planted on aggressive late-brake entries while still allowing rotation on corner exit for the low-speed hairpins.

TRACK GUIDE

• Turn 1: heaviest braking zone on track — brake late in a straight line, release progressively to rotate the car, avoid trail-braking too deep or the rear will step out given the GR86's low power/high rotation balance.
• Turn 5/6 chicane: sacrifice minimum entry speed for a clean, early throttle application — this is a traction zone where lap time is won on exit, not entry.
• Turn 9/10 (final complex before pit straight): late apex is critical — compromise the inside line slightly to maximize exit speed onto the long pit straight, this is the biggest lap time gain on the lap.
• Kerb usage: GR86 can ride moderate kerbs at Turns 3 and 8 aggressively due to soft-ish suspension — use them to tighten line but avoid unsettling car before chicane exits.
• Tyre management: push hard first 60% of stint, then back off kerb aggression and widen lines slightly in final third to manage rear degradation — rear grip fades first on this car/track combo.

THEORETICAL BEST LAP

• 1:27.400 — theoretical optimal sector composite, dry track, green conditions, no traffic.

REAL WORLD RECORD

• No official record (GR86/GR86 Cup has not raced competitively at Osch