Checking Tire Pressure


By Dawn McCaslin

Courtesy of (clicking this link will take you to the page of Geico’s website with this article)

Checking Tire Pressure: Video Demonstration and 10 Step Guide

Every vehicle comes with a manufacturer recommended tire pressure range. Tire or air pressure is measured in PSI (pounds per square inch). It is a common misconception that the PSI on the side of the tire is the recommended level. This is incorrect. The PSI on the tire is the MAXIMUM level the tire can hold. Additionally, having too low of a PSI may cause damaging wear on the tires, which can lead to poor fuel efficiency and flat tires.

Video Demonstration

Watch a how-to video for checking tire pressure and use the step-by-step guide that follows to help you check and manage your vehicle’s tire pressure.

Keep these items in your vehicle at all times:

  • Tire pressure gauge (either a standard or a digital)
  • Wipes for cleaning your hands

Ten Step Guide

Step 1

The only way to know if a tire is truly at the appropriate pressure is by using a gauge. Often a tire will look fine, but it is actually low. When you check tire pressure, be sure to check all four tires.

Step 2

Most gas stations and some car washes have air machines, and they usually charge 25 or 50 cents for air. Don’t insert your money until you’re ready to start filling your tires, as some machines run on timers.

Step 3

Find the recommended PSI for your vehicle. The best place to locate this information is on the inside of the driver’s side doorjamb. As a back-up, check your owner’s manual.

Step 4

It’s best to let your tires cool and rest prior to checking their pressure. If you check them while they’re hot, you will not get an accurate reading.

Step 5

Remember that you’ll need to work on all four tires (or two if you have a motorcycle). Locate the small little hose on the tire that is the air valve. Remove the cap and keep it someplace safe like your pocket. You don’t want it to roll away or get blown or kicked under your car. NOTE: These air valves are usually dirty so if you don’t have gloves, avoid touching your clothing until you can wipe your hands clean.

Step 6

Press the tire pressure gauge against the valve. Use firm pressure and ensure that the seal between the gauge and the valve is completely solid. Release after a second or two. NOTE: If you hear any loud hissing, you’re letting air escape and you won’t get an accurate reading.

Step 7

To read the tire pressure gauge, look at the piece that should have been pushed out from the end of the metal tube (if you are using a gauge with a circular dial, simply use the number that the needle indicates). The following image demonstrates how the gauge should look if you’ve taken a correct reading. The number that is closest to the metal base is your PSI reading.

Step 8

Add (or release) air to match the recommended limit. The air machine nozzle must be firmly and securely pressed onto the tire valve or you will let air out of the tire.

Step 9

Check the pressure again to make sure it’s correct. And remember, never overfill the tires.

Step 10

Repeat for each of the remaining tires. If you feel really motivated, check your spare tire, too!