Question 1

What is the correct tire pressure for my car?

Accepted Answer

Check the sticker inside the driver's door jamb or in the owner's manual. This is the manufacturer's recommended pressure for your specific vehicle, typically 30-35 PSI for passenger cars.

Question 2

Why not use the pressure on the tire sidewall?

Accepted Answer

The sidewall shows maximum safe pressure for the tire, not the optimal pressure for your vehicle. Using this can cause overinflation, harsh ride, reduced grip, and uneven center wear.

Question 3

How often should I check tire pressure?

Accepted Answer

Check at least monthly and before long trips. Tires naturally lose 1-2 PSI per month. Temperature changes also affect pressure - a 10°F drop decreases pressure by about 1 PSI.

Question 4

What happens with wrong tire pressure?

Accepted Answer

Underinflation: poor fuel economy, edge wear, heat buildup, potential blowout. Overinflation: harsh ride, center wear, reduced grip, increased braking distance. Correct pressure is safest and most economical.

Tire Pressure Calculator - Optimal PSI Tool