What is the standard tire pressure of a car in winter?

According to the regulations and requirements of international GBT2978-2008 standard, the standard tire pressure is 2.4-2.5bar.

Other factors that need to be referred to in automobile tire pressure:

1, seasonal factor: the standard air pressure of automobile tires in winter is appropriately raised by about 0.2bar. According to the lower limit of the standard air pressure of automobile tires in summer. In summer, when the car is parked in the open air, the air pressure can generally be about 0. 1bar lower than the standard to avoid high temperature puncture.

2. Tire condition: The tire pressure of new tires can be raised by about 0.2bar according to the standard tire pressure of automobiles. The tire pressure of old tires should be appropriately reduced according to the automobile tire pressure standard, and the lower limit of the automobile tire pressure standard should be used if the tires are seriously worn.

Extended data:

It's important to pay attention to tire pressure.

Every car's matching tire has a corresponding tire pressure, which directly affects the performance and response of the tire and affects fuel consumption to a certain extent. Excessive tire pressure will not only increase the risk of tire puncture, but also make the middle of the tire contact the ground in a protruding form, and the grip of the whole vehicle on the ground will be significantly reduced, which will not provide enough friction during emergency braking.

If the tire pressure is too low, the outer edges on both sides of the tire will touch the ground, and the whole tread will not touch the ground. It will not provide enough ground gripping area while increasing tire wall wear, which is as dangerous as driving with high tire pressure, and the thinnest tire wall will directly lead to premature tire scrapping.

Don't deliberately lower the tire pressure. Some people tend to think that the tire pressure is lower in winter to increase the contact area between the tire and the ground, and that the friction will increase and it will be safer. In fact, this idea is no longer suitable for the present situation.

In the past, the tire pressure of automobile tires was generally high, so it is correct to reduce the tire pressure in winter. But now, due to the need of comfort, the normal tire pressure of vehicles has been relatively low. If the pressure is reduced again, the tire will be easily damaged. Therefore, it is enough to maintain the standard tire pressure of vehicles in winter.

Baidu encyclopedia-tire pressure

People's Daily Online-It is risky to adjust the tire pressure too high or too low in winter.