2.5 What does this tire pressure table say?

1. Connect the tire barometer to the tire valve and press it until the pointer reaches the highest value;

2. Read the tire pressure value, see the value pointed by the pointer, and read the inner ring or outer ring. Pay attention to different units, and the inner ring will be more accurate;

3. Finally, loosen and cover the gas cap.

Tire pressure gauge can be divided into pointer tire pressure gauge, digital tire pressure gauge and alarm tire pressure gauge, and each tire pressure gauge has its own advantages and disadvantages. The pointer tire pressure gauge is easy to use, and it can detect the tire pressure only by connecting it to the tire valve, but it lacks accuracy and may be biased.

At present, most cars are equipped with tire pressure monitoring function, which can monitor tire pressure and tire temperature in real time and convey tire information to drivers through the tire pressure display interface on the dashboard. If it is not equipped, the owner can choose to install or equip a tire pressure gauge to detect the tire pressure at any time to prevent potential safety hazards caused by tire pressure problems.

Tire pressure can be higher (about 0.2 bar), but not too high. If the tire pressure is too high, it will increase the load of the car during driving, and it is easier to puncture. At the same time, the vibration of the car body becomes larger, the tire noise becomes larger, and the comfort will become worse; Tire pressure should not be too low. When the tire pressure is too low, the contact area between the tire and the ground increases, the friction resistance increases, the direction becomes heavier, and the fuel consumption increases.

Due to insufficient tire pressure, it will cause sidewall deformation, internal steel wire and ply aging, and it is easy to have a puncture. Not only does it affect the life of tires, but there are also safety hazards when driving.