The national tire standard specifies the maximum load under the corresponding solid tire pressure at a given speed. The tire pressure recommended by the manufacturer is determined based on the vehicle's rated load and the load borne by the tire during normal operation. Therefore, the vehicle must be loaded according to the rated load calibrated by the loader, and 15% overload is acceptable under normal conditions. However, overloading will cause tire deformation, which will seriously affect the service life of tires. If overloading is necessary under special circumstances, the air-conditioning pressure of the tire should be increased appropriately, but it is not suitable for long-term use. The allowable radial deformation of this type of tire is 3% to 4% of the tire diameter. In actual operation, attention should be paid to the radial deformation of the tire so that the deformation does not exceed this range.
Similarly, driving speed has a great influence on tire life. In actual use, speed and load have the same meaning, and in some cases speed is more important. In order to obtain the best use effect, if the vehicle speed is higher than the tire's rated speed, the transportation load should be appropriately reduced; if the vehicle speed is lower than the rated tire speed, the transportation load can be appropriately increased. In actual use, due to the contact and friction between the tire and the ground, the carcass vibrates. As the vehicle speed increases, the circumferential and lateral deformations increase, and the tire temperature will rise sharply, leading to a puncture.