How much tire pressure should be hit, subject to the recommended value of the car factory. This is because the setting of tire pressure mainly considers vehicle factors such as body weight and chassis height.

The recommended air pressure of the vehicle can usually be found in the following places: the owner's manual of the vehicle, the label next to the cab door (near the B-pillar), the drawer next to the driver's seat of the vehicle, and the door of the fuel tank cover.

Generally, the recommended tire pressure refers to the tire pressure measured when the tire is cooled.

Tire cooling conditions are defined as at least three hours after parking or no more than 2 kilometers after driving. If the tire pressure can only be measured when the tire is hot, please subtract about 0.3 bar (= 4psi) from the measured tire pressure to obtain the tire cooling inflation pressure.

References:

Michelin www.michelin.com.cn, official website.