Track Day Tyre Pressure Guide

Tyre pressure is one of the easiest setup changes to make at a track day, but it is also one of the easiest to get wrong. A sensible cold pressure gets you close, but your real target is almost always the hot pressure measured immediately after a proper session.

Why hot pressure matters

As the tyre works, the air inside heats up and pressure rises. Braking, cornering load, sliding, camber, car weight and session length all affect how much pressure gain you see.

Basic paddock workflow

• Set a sensible cold starting pressure.
• Drive 3–4 representative laps.
• Come straight in and measure immediately.
• Bleed down to your target hot pressure.
• Record the result for next time.

Why ambient temperature is not enough

Ambient temperature is useful, but track surface temperature can be much higher on a sunny day. A cool but sunny day can still create a hot tyre. Wet or evening sessions can do the opposite.