The tire pressure mark of motor vehicle tires means: the tire pressure limit value that vehicle tires cannot exceed, for example, it usually does not exceed 340kpa, that is, it does not exceed 3.4ba.

Generally speaking, the tire pressure on a motor vehicle tire is marked on the side of the tire. Tires are ring-shaped elastic rubber products that are grounded and rolled on various vehicles or machinery. Tires are usually installed on metal rims. They can support the body, buffer external impacts, achieve contact with the road and ensure the driving performance of the vehicle.

At present, the tire pressure marking units for automobiles in the international automobile market are mainly divided into the following three types: bar: the normal standard value is between 2.2-2.5bar, and it is mostly the tire pressure unit common to domestic automobiles. kPa: The normal standard value is between 220-250Kpa, mostly used in American and German car tire pressure units. Psi: The normal standard value is between 32.1-36.25Psi, mostly used in bicycle and motorcycle tires.

Tire maintenance methods

1. Carry out four-wheel alignment and tire rotation: Carry out four-wheel alignment and tire rotation every 10,000 kilometers.

2. Frequently check the tire pressure: Tire maintenance also includes regular check of the air pressure. Tires with an air pressure exceeding the specified limit will greatly reduce the service life of the tire, while tires with an air pressure lower than the specified limit will cause poor braking effect and poor steering. Difficult or heavy steering will also reduce the life of the tires.

3. Always pay attention to the marking lines on the tires: The tire wear marks are located in the main drainage channels of the tires and are rubber bosses with a trapezoidal cross-section. When the tire tread is worn to the level of the wear mark, the tire must be replaced. In the rainy season, in order to prevent vehicles from slipping on watery roads, the tire tread depth must be maintained at more than 3mm.