| 摘要 |
<p>Tread with a tread surface (30) and at least one wear indicator (40) formed by at least one cavity recessed into the tread surface, the profile of the cavity on the tread surface comprising a bearing surface (101) and a plurality of parts (111 - 113) connected to and projecting from the bearing surface, the number of projecting parts being a function of the tread wear, the geometrical shape and area of the profile of the cavity on the tread being modified as a function of the tread wear, the geometrical shape of said profile being an analogical expression of the tread wear, in which the profile of the cavity on the tread surface is a single closed curve.</p> |
