| 摘要 |
A tyre tread band having a centre, two shoulders on either side of the centre, and two edges on either side of the shoulders and forming a transition with the sidewalls. The profile of the tread band has at least a first arc forming part of the centre, two second arcs forming part of the shoulders, and two third arcs forming part of the edges; and, at one junction, each second arc is connected discontinuously to the first arc by a step, wherein the second arc is not tangent to, and is radially lower than, the first arc. |
