How-to
How to Check Tire Pressure (and Why It Matters)
🇩🇪 Diesen Artikel auf Deutsch lesenCheck tire pressure once a month with a gauge when the tires are cold. Use the recommended pressure on the sticker inside the driver's door frame, not the maximum printed on the tire. Underinflated tires wear faster, handle worse and reduce gas mileage.
Tires lose about one psi per month naturally, and more when temperatures drop. Many drivers only notice when the warning light comes on — by then the tire may already be well below the recommended pressure.
Step by step
- Find the recommended pressure
Look at the sticker inside the driver's door frame or in the owner's manual. Front and rear pressures can differ.
- Check when tires are cold
Measure before driving or after the car has been parked for a few hours. Driving warms the tires and raises the reading.
- Remove the valve cap
Unscrew the small cap on the tire valve and keep it somewhere safe.
- Press the gauge onto the valve
Press firmly and evenly so you don't hear air escaping, then read the pressure.
- Add or release air
Use a home compressor or a gas station air pump to add air in short bursts. Press the valve pin gently to release air if the pressure is too high.
- Check all four tires and the spare
Repeat on every tire, replace the caps and remember the spare if your car has one.
Why it matters
| Problem | Effect of underinflation |
|---|---|
| Safety | Longer braking distance, worse handling, higher blowout risk |
| Fuel economy | Higher rolling resistance means more fuel per mile |
| Tire life | Faster wear on the outer edges |
See what your driving costs — and what better efficiency could save:
Road Trip Gas Cost CalculatorFuel cost for any trip, split by passengersTry the calculator →Frequently asked questions
Is the tire pressure warning light enough?
No. Many systems only warn when pressure is about 25% below the recommended level. Monthly manual checks catch problems earlier.
Should I inflate to the number on the tire sidewall?
No. That is the tire's maximum pressure, not the recommended pressure for your car.