HOW TO USE A TIRE PRESSURE GAUGE:
1. Refer to your owner’s manual or driver’s side door post for
proper level of tire inflation. Recommended pressure is usually
between 24 to 34 pounds per square inch (psi) when the
tires are cold and may vary from front to back tires.
2. Tires must be cool when pressure is checked. This means
not hot from driving. If you have to drive to get to an air
pump, check and record the tire pressure first and add the appropriate air pressure when you get to the pump. It is normal for tires to heat up and the air pressure inside to go up as you drive. Never “bleed” or reduce air pressure when the tires are hot.
3. Unscrew the cap from the valve on the rim of your tire and
firmly press tire gauge onto the valve to see how much air
is currently in the tire. A measure stick will push up and out of
the end of the pressure gauge to tell you the current pressure.
4. Add air to achieve recommended air pressure by firmly
pushing the air hose over the valve until you hear the air
going into the tire. A hissing noise indicates air is escaping; air
going in sounds like a balloon being inflated.
5. If you overfill the tire, you can release air by pushing on the
metal stem in the center of the valve with a fingernail or the tip of
a pen. Recheck the pressure with your tire gauge after putting
air into the tire.
6. Replace the valve cap.
7. Repeat with each tire, including the spare.