Calculadora de Pressão dos Pneus
Verifique a pressão correta dos pneus do seu veículo e saiba quando calibrar para maior segurança.
Temperature-Adjusted PSI
28.0 psi
Temperature-Adjusted PSI vs Recommended Tire Pressure
Formula
Tire Pressure and Temperature
Tire pressure changes by approximately 1 PSI for every 10°F change in temperature. Underinflated tires waste fuel and wear unevenly.
Rules of Thumb
Temperature Adjustment: ~1 PSI per 10°F change
Fuel Penalty: ~0.2% per 1 PSI below recommended
For every 1 PSI underinflated across all four tires, fuel economy drops about 0.2%. At 5 PSI under, that is 1% worse mileage and significantly accelerated tire wear.
Exemplo Resolvido
Tires at 30 PSI (recommended 35) with a 20°F temperature drop.
- 01Temperature effect = -20 / 10 = -2 PSI
- 02Adjusted pressure = 30 + (-2) = 28 PSI
- 03Underinflation = 35 - 30 = 5 PSI
- 04Fuel penalty = 5 x 0.2% = 1.0%
Perguntas Frequentes
Where do I find the recommended tire pressure?
Check the driver's side door jamb sticker or your owner's manual. Do NOT use the pressure on the tire sidewall, which is the maximum, not the recommended pressure.
Should I check pressure when tires are cold?
Yes. Check before driving or after sitting for 3+ hours. Driving heats tires and increases pressure 2-4 PSI, which can mask underinflation.
How often should I check tire pressure?
At least monthly, and before long trips. Even new tires lose 1-2 PSI per month naturally through the rubber. Temperature swings in spring and fall cause significant changes.
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