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Tuning reference /tire-pressure

Tire Pressure

Sets the contact-patch shape and how grip loss feels (gradual vs sudden).

Your dataCar #3650· last 3 laps
FL temp avg39.2 °C
FR temp avg39.1 °C
RL temp avg38.3 °C
RR temp avg38.3 °C
All four in 85.0 °C–100.0 °C0.2%

What it does

Higher pressure presses the middle of the tire harder into the road — peak grip is higher but the falloff into a slide is sharp and unforgiving. Lower pressure spreads the contact patch, gives more total grip up to a lower peak, and the slide arrives gradually.

Community wisdom carrying into FH6: start with cold pressures around 28–30 psi (1.9–2.1 bar) and aim for warm pressures of 32–34 psi (2.2–2.35 bar). Cold start values are what the slider shows; warm pressures are what the tires actually run at after a few corners.

Front and rear are usually equal. Using pressure to fix balance is a last resort — it changes contact patch shape too, which interacts with camber. Use ARBs first.

FH6 build note: front tire **width** is now a first-class lever — if you need more front grip you can widen the fronts without bumping to the next compound tier (a path that didn't exist in FH5). Lives in the upgrade menu, not the tune sliders.

In-game controls

Front tire pressure
Range: 28–34 psi
Raise →
sharper response, higher peak grip, snappier breakaway
← Lower
softer response, more progressive slide, more heat buildup
Rear tire pressure
Range: 28–34 psi (usually equal to front)
Raise →
less rear grip overall (good vs oversteer on grip-limited cars)
← Lower
more rear grip, more tendency to overheat under power

Watch these telemetry signals

  • Tire temperaturetireTempC
    Where: Corner panels, tire temp heatmap (cold blue → optimal green → hot red)
    Sustained >100 °C after 1–2 laps = underinflated for the load. Cold tires (<70 °C) after a hard lap = overinflated or insufficient camber.
  • Tire slip angle (lateral)slipAngle
    Where: Corner panels, "slip A" — compare front vs rear
    Slip ramps quickly past 0.4 with no warning = pressure too high; slip creeps up steadily = pressure low
  • Tire slip ratio (longitudinal)slipRatio
    Where: Corner panels, "slip R" — front/rear and L/R
    On power, slip ratio spikes immediately past 0.1 then drops = wheelspin breaking traction sharply (high pressure)

Symptom → fix

What you feel Likely cause Try this
Tires overheat by lap 2Underinflated → too much sidewall flexRaise the corner that's hot by 1–2 psi
Car loses grip very suddenly (snap)Overinflated — small contact patch at the limitLower pressure 1–2 psi; recheck slip-angle behavior on telemetry
Tires never reach optimal band (always cold)Overinflated or under-loaded (too much camber)Drop pressure first, then revisit camber

Symptoms that point here

Related

Alignment (Camber, Caster, Toe)Differential (Accel & Decel)