tire pressure gauge is an essential item in your tool box. You can't tell whether your tires are at the correct pressure just by looking at them. If you are driving over or under-pressurized tires, it will deduct the life of your tire or increase your chances of a blowout. And It is dangerous for your driving. So we need a tire pressure gauge. Follow these simple steps and tips to help you correctly check your tire pressure.
Find the correct air pressure specification for your vehicle's tires. This information is printed on a sticker which you will find either on the driver's side door jamb, in the glove box or in the trunk. Don't simply go by the pressure amount imprinted on the sidewall of the tire as this specifies the maximum pressure the tire can take.
Unscrew the plastic cap on the air valve and be sure not to lose it.
Press the tire pressure gauge against the air valve and hold it there firmly. If you hear any hissing, air is escaping from the tire and you need to hold the tire pressure gauge to the valve more firmly.
Read the measurement on the tire pressure gauge. Remove the gauge and if your tire pressure is correct, replace the plastic cap. If air is required, add more using a tire pump, or one of the air compressors you will find at gas stations. Be careful not to add too much air to your tires.