What is the normal car pressure?

The normal tire pressure standard of a car is 2.3-2.5 bar.

Tire pressure is not constant. During driving, the increase of tire temperature will lead to the increase of tire internal pressure. Generally speaking, the tire pressure is low at low temperature, and it will rise while driving. It is normal for the tire pressure to approach or even exceed 3.0bar when driving in summer, so there is no need to worry.

In summer, due to the high temperature, the normal tire pressure of the car will decrease, and due to the high temperature during driving in summer, the tire temperature will also increase during driving, and the tire pressure will also increase, which can be between 2.3 and 2.5 bar; It can be higher in winter, 2.6-2.8 bar; On the contrary, because of the low temperature in winter, the tire pressure is 0. 1 to 0.2 points higher than usual.

The only thing the owner needs to consider is whether the tire pressure of the cold tire is standard and whether the tire pressure of the four tires is basically the same. If there is a big difference, it needs to be adjusted.

Extended data:

1, the manufacturer will have clear suggestions on the tire pressure value. Except in the instruction manual, the nameplate of the car body will be clearly engraved. This tire pressure label will generally appear at the bottom of the B-pillar or in the fuel tank cover.

Some cars will give two sets of reference values according to different vehicle loads, and mark the front and rear tire pressures respectively. Generally speaking, this value is between 2.2 and 2.5 bar. Even some cars have the suggestion of spare tire pressure, which is slightly higher, between 2.8 and 3.5 bar.

Almost all automobile manufacturers have not put forward suggestions to adjust tire pressure because of seasonal changes. Because when the vehicle is driving normally, the temperature in the tire will rise sharply, which is much higher than the temperature change all the year round. Therefore, seasonal changes have little effect on the working temperature in the fetus. It is not meaningful to adjust the tire pressure according to the season.

2. The tire pressure is seriously insufficient. If it is lower than 1.5bar, the tire will buckle back when driving, resulting in too high tire wall temperature and the danger of puncture. For vehicles with recommended tire pressure of 2.2bar, there is no safety problem if the tire pressure is higher than the standard value 1bar, but it is very dangerous if it is lower than the standard value 1bar.