Tire Pressure Calculator
Temperature Adjustment
Adjust tire pressure for temperature changes
Load-Adjusted Pressure
Adjust tire pressure for extra vehicle load
Formula
Adjusted PSI = Recommended PSI + (Temperature Change / 10) + Load Adjustment
Frequently Asked Questions
Where do I find my recommended tire pressure?
The recommended tire pressure is on a sticker inside the driver's door jamb, in the glove box, or in your owner's manual. Do NOT use the max pressure on the tire sidewall - that is the maximum the tire can handle, not the optimal pressure for your vehicle.
How does temperature affect tire pressure?
Tire pressure drops about 1 PSI for every 10°F decrease in temperature. If you set your tires to 35 PSI in 70°F weather, they may read 31 PSI on a 30°F morning. This is why the tire pressure light often comes on in cold weather.
What happens if tire pressure is too low or too high?
Under-inflated tires increase fuel consumption, wear unevenly on the edges, generate excess heat, and can fail. Over-inflated tires give a harsh ride, reduce traction, and wear unevenly in the center. Keep tires within 2-3 PSI of the recommended pressure.
You may also need
A
Braking Distance Calculator
Free braking distance calculator. Calculate the stopping distance of a vehicle based on speed, road conditions, reaction time, and road grade.
Science~
MPG Calculator
Free MPG calculator. Calculate your vehicle's miles per gallon fuel efficiency from distance driven and fuel used. Compare with EPA estimates.
Everyday~
Fuel Cost Calculator
Free fuel cost calculator. Estimate gas cost for a trip based on distance, fuel efficiency, and gas price.
Everyday