Where do I find the correct tire pressure?

Use the tire placard on the driver-side door jamb or the owner's manual. Do not use the sidewall maximum as the normal setting.

Should I check tires hot or cold?

Check cold tires before driving or after the vehicle has been parked for several hours.

Does temperature change PSI?

Yes. Tire pressure changes with temperature, which is why cold-weather checks are important.

Tire Pressure Calculator

Estimate tire pressure adjustments in PSI from placard pressure, temperature, load and highway-use assumptions.

Placard cold tire pressure (PSI)

Use the door jamb placard, fuel door label, or owner manual. Do not use the tire sidewall maximum as a target.

Ambient temperature (F)

Vehicle load

Driving plan

Use the vehicle placard as the baseline

English tire-pressure intent is PSI-first and safety-focused. The calculator starts from the cold tire pressure on the vehicle placard, then applies simple planning adjustments for temperature, load and sustained highway driving.

Manufacturer pressure wins

Always follow the vehicle placard or owner's manual. The pressure molded on the tire sidewall is usually a maximum tire rating, not the recommended vehicle pressure.

P S I_{es t ima t e d} = P S I_{pl a c a r d} + T e m p er a t u r e a d j u s t m e n t + L o a d a d j u s t m e n t + H i g h w a y a d j u s t m e n t

Frequently Asked Questions

Sources and References

Calculations are based on the listed reference sources. Links open in a new tab.

Updated: June 2, 2026

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