1. The influence of tire tread depth
The deeper the pattern, the greater the elastic deformation of the ground block, and the rolling resistance caused by the elastic hysteresis loss of the tire will also increase. The deeper pattern is not conducive to the heat dissipation of the tire, so that the tire temperature rises faster, and the root of the tread is easy to tear and fall off due to severe punishment. The shallow pattern not only affects its water storage and drainage capacity, and is prone to harmful "hydroplaning phenomenon", but also highlights the disadvantages of smooth tread tires that are easy to slip, so that the performance of the car mentioned above deteriorates.
2. It is not good if the pattern is too deep or too shallow
Therefore, it is not good to have a pattern that is too deep or too shallow. The objective law is that the pattern will become smaller and smaller in use. In order to ensure the effectiveness of the tread action, countries around the world have established clear regulations on the wear limit of the tire tread. and engraving the tire wear limit warning mark "" and/or "TWI" at several equal parts along the circumference of the tire shoulder. When the protrusion of the tread block is worn about 1.6 mm (1/16 inch) to the bottom of the tread groove, the pattern at the marker has been smoothed, revealing a narrow horizontal strip of smooth tread to warn the driver that the tire is time to be replaced.