Unscrew the valve stem cap from the valve stem on the tire.

Using a handheld pressure gauge, check the pressure in the tires. The tires should be inflated to approximately 30 psi.

Check your owners manual for the proper tire inflation pressure specific to your vehicle's make, model, and year.

Using an air compressor, re-inflate the tires to the desired air pressure.

Although many air compressors have built-in tire pressure gauges, they are often inaccurate. Use a handheld gauge to accurately measure the pressure.