Signs such as △,-and □ or words such as W and D are marked on the side of the tire, indicating the lightest part of the tire. When installing the inner tube, the valve should be aligned with the symbol to make the weight around the tire uniform and maintain the stability of the tire when it rotates at high speed. The high-pressure tire is represented by DXB, D represents the nominal outer diameter of the tire, and B represents the cross-sectional width of the tire in inches. X stands for high pressure tire.
Extended data:
Precautions:
1, always check whether the tire is damaged. If there are nails or cuts, repair or replace the damaged tire in time.
2. Under any circumstances, don't exceed the reasonable speed required by driving conditions and traffic rules (for example, please slowly pass through or avoid obstacles such as stones and potholes in front.
3. We all know that the running-in period can't be too fast, but it should be noted that speed is not the only concern, but more importantly, speed! Generally, the speed should not exceed 3000 rpm, and it should not exceed 3500 rpm in the case of automatic transmission.
4. Don't drive at low speed for a long time: During the running-in period, it is best not to drive in first or second gear for a long time. Driving in low gear for a long time will damage the gearbox, so you can choose high and low gear to cooperate with each other for running-in.
Baidu encyclopedia-tire
Baidu encyclopedia-tire signs