To solve a problem that conventionally a tread is reduced by buffing in order to shape a mounting surface and then another tread is covered on it and is integrated by re-vulcanization when reclaiming a worn tire, buffing requires skill, and it is not easy to achieve sufficient bonding strength by re- vulcanization, and thereby to achieve a structure for reclaiming a tire without these steps.

A circular groove 13 is formed on a surface of a crown part 12 of a tire body 10, and a circular tread 16 is wound and detachably fitted into the circular groove 13. Side grooves 14 and fitting parts 15 are provided on both sides of the circular groove 13. Fitting ends 17 formed on both sides of the tread 16 are fitted into the side grooves 14, and are pressed by fitting parts 15.