How to Check Your Tire Pressure

It is very important to use a tire gauge when checking tire pressure. There is no way to tell if tires need air by simply looking at them unless they are drastically low on air. Tire gauges can be purchased at any automotive store or even at a local gas station for a few dollars. A digital gauge is not really necessary but they are easier to read. When deciding on which to purchase, don't go for the super-cheap ones as they can sometimes have inaccurate readings. About $4 to $12 can get you a decent gauge. If you are checking your tires on a whim, and don't have a gauge, most gas stations also have gauges on the air machines.

Before putting air in the tires, locate the correct recommended air-pressure for the tires. The recommended air-pressure is usually located on the inside of the vehicle on the driver's side doorjamb or it will be listed on the actual tire. It is very important that if looking at the tire for specifications, to look in the right place. Find where it says "recommended" tire pressure. Sometimes the tire lists the "maximum" pressure for the tire. In that case, go to the doorjamb of the vehicle or the owner's manual for the recommended air-pressure. Don't use the maximum pressure as the amount of air for the tire. Once locating the recommended pressure, remove the screw cap on the valve on the tire. It is best to place the cap on the ground next to the tire or safely in a pocket. They can easily be misplaced. Then, place the pressure gauge up against the air valve firmly. If air is coming out of the tire while checking the pressure, press down harder. There should be no air released from the tire when checking pressure and there should be no hissing sound. Once the gauge is on firmly, you will be able to read the measurement.

Once the measurement is displayed, decide whether or not air needs to go in. If adding air to the tire, remember to check the pressure with the gauge after adding to make sure the correct amount of air-pressure is in the tire. Too much or too little air can cause unsafe driving conditions. After the right amount of air has gone into the tire, it is okay to put the screw cap back on the air valve and move on over to check the next tire.