Keeping the correct air pressure in your tires helps your tires last longer, helps your car handle better and safer, and helps you save money on fuel. Inaccurate pressure can cause poor mileage, uneven tire wear, or a tire blow-out. To prevent these events from happening it is important to maintain proper tire pressure.
Tire Pressure Gauge
A tire gauge is a good tool to have handy. Use it to check tire pressure at least once a month. Check your tires “cold”. Checking air pressure in cold tires ensures that the air hasn’t expanded from heat, giving you a more accurate reading.
Air Pressure Information
Recommended tire pressures are listed on a label that’s usually found in the doorjamb on the driver side. This number is the lowest PSI one would inflate the tires to and is suggested by the car’s manufacturer.
How to Check Air Pressure
First Unscrew the valve stem cap from the valve stem on the tire. Place these in a safe spot where you won’t lose them. Next press the air pressure gauge evenly onto the valve stem and record the reading given. if you hear a hissing noise the gauge is not tight or even enough for an accurate reading. Adjust the angle. Compare the measured psi to the psi found on the sticker inside the driver’s door of your vehicle or in owner’s manual. If inadequate pressure is in the tires then fill the air in the tires. Make sure you put in the correct amount.Replace valve stem cap.
Source – How to Check your Tire Pressure by Catherine