What is the normal tire pressure for a car driving at high speed?

[LeLola]

The standard tire pressure for a car driving at high speed is between 2.3bar and 2.5bar. The following introduces the relationship between tire pressure and load capacity, as well as the hazards of excessive tire pressure: Relationship between tire pressure and load capacity: Tire pressure is an indicator of a car's load capacity. The size of the car's load depends on the level of tire pressure. According to the relationship between the tire load index, tire pressure, and tire load capacity, the higher the tire pressure, the greater the load capacity; the lower the pressure, the smaller the load capacity. For example, for a tire with a load index of 80, when the pressure is 0.15 MPa, the load capacity is 300 kg, and when the pressure is 0.25 MPa, the load capacity becomes 450 kg. This shows that tire pressure has a significant impact on the car's load capacity. Hazards of excessive tire pressure: Tire friction and adhesion will decrease, affecting braking performance. This can cause steering wheel vibration and deviation, reducing driving comfort. It also accelerates the wear of the central tread pattern of the tire, shortening the tire's lifespan.