A tire pressure gauge is a tool for measuring the tire pressure of a vehicle. There are three types of tire pressure gauges: pen tire pressure gauge, mechanical pointer tire pressure gauge and electronic digital tire pressure gauge. Among them, the digital tire pressure count value is the most accurate and the most convenient to use. Air pressure is the life gate of a tire. Too high and too low will shorten its service life. If the air pressure is too low, the carcass deformation will increase, the sidewall will be prone to cracks, and at the same time, the flexing motion will occur, resulting in excessive heat generation, which will cause the rubber to age, the ply fatigue, and the cord to break.

The tire pressure is generally indicated near the door pillar of the vehicle or on the fuel tank cover. The tire pressure of most cars is between 2.2-2.5kg/cm2, which cannot be increased or decreased at will.

Tire pressure is not only related to the comfort of driving, but also related to the safety of driving. If the tire pressure is too high, the friction and adhesion of the tire will be reduced, and the hidden danger of the tire will be formed, which will affect the safety of the driving. The low tire pressure will not only cause the direction of sinking, the deviation and other unfavorable driving safety factors. Damage to the tires. Excessive crushing can also cause high temperatures in the tires, which can also cause punctures.