Tire Pressure Guide
Correct tire pressure is essential for safety, fuel economy, and tire life. This guide covers everything you need to know about tire inflation.
Effects of Incorrect Tire Pressure
Under-Inflated
- Increased fuel consumption (up to 3%)
- Faster edge wear
- Reduced handling response
- Higher risk of tire failure
- Decreased tire life (up to 25%)
Correct Pressure ✓
- Optimal fuel economy
- Even tread wear
- Best handling and braking
- Maximum tire life
- Safest driving experience
Over-Inflated
- Harsh, uncomfortable ride
- Faster center wear
- Reduced traction
- More susceptible to road damage
- Increased braking distance
How to Check Tire Pressure
- Find recommended pressure: Check the sticker on the driver's door jamb or your owner's manual for the recommended cold tire pressure.
- Check when tires are cold: Check tire pressure when tires are cold (haven't been driven for 3+ hours). Driving heats tires and increases pressure readings.
- Use a quality gauge: Use a reliable tire pressure gauge. Digital gauges are generally more accurate than pencil-type gauges.
- Inflate to spec: Inflate each tire to the recommended PSI. Don't forget the spare tire.
FAQ
What PSI should my tires be?
The recommended tire pressure is found on a sticker inside the driver's door jamb or in your owner's manual. Most passenger cars recommend 30-35 PSI. Do NOT use the maximum pressure printed on the tire sidewall as your daily inflation target.
Is 40 PSI too high?
40 PSI may be appropriate for some vehicles (check your door jamb sticker), but for most passenger cars it would be over-inflated. Over-inflation causes a harsh ride, reduced traction, and uneven center wear.
Should I inflate to the pressure on the tire?
No. The number on the tire sidewall is the MAXIMUM pressure, not the recommended pressure. Always follow the vehicle manufacturer's recommendation found on the door jamb sticker.