Generally speaking, the normal tire pressure range is 230-250kpa. However, the specific normal tire pressure of the vehicle shall be subject to the recommended value of the vehicle manufacturer. Generally, the recommended value of the vehicle manufacturer can be found in the vehicle user manual, the label next to the cab door (near the B-pillar), the drawer next to the driver's seat and the small door of the fuel tank cover. The specific tire pressure used by the tire will be marked in detail.
Moreover, the tire pressure standard is also related to the tire type and model. Different models have different vehicle weight, height and tire size, and the required tire pressure is also different. The tire pressure of standard tire is 240kpa-250kpa, and that of reinforced tire is 280kpa-290kpa.
In addition, the tire pressure of cold tire and hot tire is also different. The tire pressure of hot tire is about 20KPa higher than that of cold tire. The recommended value of the depot is the cold tire pressure value. The tire pressure in the cold state is about 230kpa-250kpa, but the specific tire pressure shall be subject to the tire pressure marked on each vehicle.
In addition, the tire pressure is also greatly affected by seasonal factors. The temperature is high in summer, and the tire is easy to heat during driving. If the tire pressure is high, it is easy to cause tire burst, and the tire pressure should be slightly lower; The tire pressure in winter is a little higher than that in summer. Because of cold shrinkage and heat rise, the tire pressure of cars in winter is generally between 250kpa-280kpa.
Proper tire pressure is very important for driving safety. Improper tire pressure will affect the normal driving of the vehicle. Because the tire pressure is too high, the contact area between the tire and the ground will become smaller, and the pressure and wear per unit area will increase sharply, which is easy to cause out of control braking or tire burst, and it is easy to shake and uncomfortable to ride.
If the tire pressure is too low, the contact area between the tire and the ground becomes larger, the direction is heavier, the fuel consumption of the car increases, and there will be a feeling of lack of power. Insufficient tire pressure will cause sidewall deformation, exacerbate the aging of internal steel wire and cord fabric, and shorten the tire life.