To distinguish the inner side from the outer side of a tire, we can judge it according to several key points:

1. Check the tire tread to see if there is any reverse pattern, and if there is, the tire has an inner side and an outer side;

2. Adjust the tire to the normal position, and look at the inner and outer edges of the tire. There will be "TR" and "TL" on the end, and "TR" stands for "tread", which translates into "pattern" in Chinese, indicating the inner side of the tread; And "TL" stands for "tread-less", which means "no pattern" when translated into Chinese, indicating the outside of the tire.

3. Check the tire trademark. Generally, the tire trademark will be located on the inside, and there may be no trademark on the outside.

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