A marked tire refers to a tire with the white bar code removed from the toe of the tire. If the trademark of the tire is removed, it is not a genuine tire. This is because the factory found defects, some can be used, but not three-package products. The manufacturer is not responsible for the problem, which can be said to be unqualified tires.

Generally speaking, except for the defects of unqualified tires in the factory self-inspection, the quality of tires ground by other channels is the same as that of genuine tires, but there are no three guarantees. Tires with defects detected by the factory are called usable tires, and there are some small defects such as uneven glue and too many jumpers in dynamic balance. This kind of tire can be seen from its appearance.