What is a track day tyre pressure calculator?

A track day tyre pressure calculator estimates a cold starting pressure so tyres reach a chosen hot pressure after running on circuit.

Should I use cold or hot tyre pressures on track?

Cold pressure is the starting point. Hot pressure measured immediately after a representative session is usually the target for track days and club motorsport.

Does PSI Predictor replace checking pressures in the paddock?

No. It gives an estimated baseline. You should still measure hot pressures with a reliable gauge and adjust from real data.

PSI Predictor

Track Tyre Pressure

Calculator, database and practical setup guidance

Built for UK track days Weather-aware starting pressures Community data

▣ Session & Conditions

Track

Tyre

Used to estimate realistic pressure gain and operating temperature behaviour.

Date

Drivetrain

Used to bias front/rear pressure gain.

Car weight

Heavier cars usually build more heat and pressure.

Session length

Longer sessions normally increase pressure gain.

Track condition

Auto-set from weather data. You can manually override it.

🌡️ Estimated ambient temperature

Forecast source: Open-Meteo

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🏎️ Suggested target hot pressures

Based on commonly used track-day and club motorsport setups

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◴ Pressure Inputs

Target hot pressure (PSI)

Your intended hot pressure after a proper session.

Expected hot tyre temperature (°C)

Auto-estimated from ambient. Typical: 50–80°C

Cold tyre temperature (°C)

Auto-filled from forecast. You can adjust if needed.

Adjustment (PSI)

Add your own correction, e.g. +0.5 if an axle ends up low.

Front target hot pressure (PSI)

Leave blank to use main target hot pressure.

Rear target hot pressure (PSI)

Leave blank to use tyre recommendation or main target.

Previous cold pressure set (optional)

Used as a note in the share output.

Previous hot pressure measured (optional)

Useful for comparing against real results.

◴ Recommended Cold Pressure

—PSI

Select a track and date to begin.

Details

Target hot pressure30.0 PSI

Expected hot temperature60 °C

Cold temperature15.0 °C

Adjustment+0.0 PSI

Estimated pressure gain— PSI

Advanced estimate

Front cold pressure— PSI

Rear cold pressure— PSI

Estimated track temp— °C

Front pressure gain— PSI

Rear pressure gain— PSI

Saved setups

No saved setups yet.

Send feedback / real tyre data

ⓘ Important

This calculator uses the ideal gas law and provides an estimate only. Actual results will vary based on tyre construction, loads, driving style and track conditions. Always fine-tune based on real data.

🏁 Built for UK track day and club motorsport use

PSI Predictor is a tool designed to help drivers get a sensible first cold pressure before fine-tuning from real hot pressure readings in the paddock.

🔎 Interactive track tyre pressure database

Search pressure starting points by tyre, circuit, car type and drivetrain. Records are clearly marked as owner-supplied data or estimated baselines.

Search the database

📚 Track tyre pressure guides

Use the calculator for your starting PSI, then read the setup guides for more context on hot pressures, pressure gain and specific UK track day use cases.

Tyre guides
Yokohama A052
Nankang AR-1
Yokohama AD09
Michelin Cup 2
Toyo R888R
Tyre pressure database

Circuit guides
Castle Combe
Silverstone
Brands Hatch
Donington Park
Oulton Park
Cadwell Park

Setup articles
Track day guide
How to set pressures
Why pressures rise
How to read tyre temperatures
Wet weather pressures
Pressure logging