There is a molded "△" sign on the shoulder of the tire along the round Friday, which is a tire wear warning signal sign. When the tire pattern is worn to 1.6mm from the bottom of the groove, this part of the groove begins to break, resulting in a clear crack. This reminds the driver that the tires must be changed. The tire wear indicator is not only a guarantee of safe driving of the tire, but also a basis for checking whether the tire is wearing normally. When there is abnormal wear on the tires, it is clearly displayed on the tire wear indicator.
China's national standard stipulates that the wear limit of radial tire pattern for cars is 1.6mm, and the wear limit of radial tire pattern for trucks and buses is 2.0mm.