How to Check Tire Pressure

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Check all of your car's tires once a month or whenever they look low. Low tire pressure can lower your gas mileage, make your car handle poorly and even lead to blowouts. Follow these few helpful steps to keep you safe on the road with properly aired tires!

Difficulty:
Moderately Easy

Instructions

Things You'll Need

  • Tire-pressure Gauge
    • 1

      You can't tell whether a tire has the correct air pressure just by looking at it. Always use a tire-pressure gauge. You can buy a good-quality tire-pressure gauge at your local auto-parts store. If you don't have one, the pressurized-air machines at many gas stations and garages have gauges, although they might not always be accurate or functioning.

    • 2

      Find the air-pressure specifications for your car's tires. You'll usually find them on a sticker located on the driver's side doorjamb. Or the sticker may be in the glove box or trunk. Don't look at the tire's sidewall for the air-pressure specifications, as it lists the maximum pressure for the tire.

    • 3

      Unscrew the plastic cap on the air valve. Put it in your pocket so you don't lose it.

    • 4

      Press the tire-pressure gauge against the valve and hold it down firmly (see illustration). If you hear a hissing noise, you are letting air out. Press down harder.

    • 5

      Read the measurement on the gauge.

    • 6

      Add air as needed (see How to Inflate Your Tires), but don't overfill the tire.

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