The influence of the pattern depth.
The deeper the pattern is, the larger the elastic deformation of the pattern block is, and the rolling resistance formed by the elastic hysteresis loss of the tire will increase. The deep pattern is not conducive to the tire heat dissipation, so that the tire temperature rise faster, the root of the pattern because of stress and easy to tear, fall off. Too shallow pattern not only affects its water storage, drainage capacity, easy to produce harmful "skiing phenomenon", but also make light tread tires easy to slip the drawbacks of protruding out, so that the aforementioned car performance deterioration.
Therefore, the pattern too deep too shallow is not good. The objective rule is that the use of the pattern will become smaller. In order to ensure the effectiveness of the effect of the pattern, all countries in the world have made clear regulations on the tread wear limit. The tyre wear limit warning mark "" or (and) "TWI" is stamped on the tire tyre shoulder along several parts of the circumference. When the pattern block convex wear distance to the bottom of the pattern groove about 1.6mm (1/16 inches), the markings on the pattern has been polished, so a narrow strip of light tread, to warn the driver, the tyre has to be replaced.
In addition to the above three kinds of patterns, there are three kinds of patterns: single-oriented pattern, block pattern, asymmetrical pattern.
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