Car Basics

Understanding Tire Pressure

Proper inflation improves safety, fuel economy, and tire life.

4 min read4 sections

1Finding the Right Pressure

The correct tire pressure is on a sticker inside your driver's door jamb, NOT on the tire sidewall. The sidewall shows maximum pressure, not recommended pressure.

2When to Check

Check tires when cold (before driving or after sitting 3+ hours). Pressure increases when tires heat up, giving false readings.

3How to Check and Fill

Remove the valve cap, press a tire gauge firmly onto the valve, and read the pressure. Add air at a gas station if low, checking frequently to avoid over-inflation.

4Signs of Pressure Problems

Underinflated tires cause poor fuel economy and edge wear. Overinflated tires cause harsh ride and center wear. Uneven pressure causes pulling to one side.

Key Takeaways

  • 1Use door jamb sticker, not tire sidewall
  • 2Check when tires are cold
  • 3Improper pressure affects safety and economy
  • 4Check monthly and before trips

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