Start with the placard
The vehicle placard is the right baseline for normal driving. Use the sidewall maximum only as a safety limit, not as the recommended everyday PSI.
Free PSI adjustment tool
Free Tire Pressure Calculator
A tire pressure calculator estimates a practical PSI setting from your vehicle placard pressure, current tire pressure, load, driving condition, and temperature swing.
Pressure model
placard + load + temp shift
Use it before cold mornings, road trips, extra cargo, or towing so the vehicle starts closer to the right cold PSI.
Estimate your pressure adjustment
Enter placard PSI, current pressure, temperature, load, and driving condition.
Account for weather
Tire pressure drops as temperature falls and rises as weather warms. The calculator uses a 1 PSI per 10 degrees Fahrenheit rule of thumb.
Plan the drive
Use the result before coordinating a road trip, school carpool, or activity pickup with extra passengers and cargo.
Start a carpoolTire Pressure FAQ
What is a tire pressure calculator?
A tire pressure calculator estimates a practical PSI setting from your vehicle placard pressure, current tire pressure, load, driving condition, and temperature swing.
How much does tire pressure change with temperature?
A common rule of thumb is about 1 PSI for every 10 degrees Fahrenheit of temperature change, with pressure dropping in colder weather and rising in hotter weather.
Should I use the tire sidewall PSI?
Use the vehicle door placard as the normal starting point. The sidewall usually lists the tire's maximum pressure, not the recommended everyday setting.
When should I check tire pressure?
Check tire pressure when tires are cold, before long drives, after large weather changes, and whenever load or towing conditions change.