#PROPER TIRE PSI MANUAL#

If you’re using the air compressor at a gas station, be sure to park so that the hose will reach all four tires.

Many air compressors are different, so read directions carefully to be sure you’re using it correctly. Use an air compressor to refill any tires with low pressure. Write down the reading and repeat this process for all four tires. A digital gauge will show you the reading on a screen. Measurement units are etched into the bar. With a standard gauge, the air pressure will push a small bar out from the bottom of the gauge. Then place the pressure gauge on the valve stem and press down hard enough so the hiss sound disappears and your gauge provides a reading. Remove the valve cap from one of your tires. If your front and rear tires require different pressure levels, write down the correct PSI for each to avoid getting confused as you move around your vehicle checking tire pressure. If you cannot find it, you should consult your vehicle dealer, manufacturer, or a qualified tire professional.

#PROPER TIRE PSI MANUAL#

Look on the driver’s side door jamb or your owner’s manual to find the recommended cold tire PSI for your front and rear tires. PSI is the unit your pressure gauge uses to provide readings. Tires are considered cold when the vehicle has been parked for three hours or more, or if the vehicle has been driven less than a mile (1.6 km) at moderate speed. Vehicle manufacturers specify PSI – literally “pounds per square inch” of pressure – assuming tires are cold.

Proper tire psi