| 摘要 |
A plurality of transverse grooves 8 are provided in the tread of a tire 2, each groove 8 having both sidewalls 10, 11 slanted in the same direction as one another with respect to the normal to the tread surface 4 (Fig. 2), with the sidewalls of some grooves 8 being slanted in one direction r and the sidewalls of the remaining grooves 8 being slanted in the opposite direction, whereby the tire 2 has snow traction regardless of which direction it is rotating. The angle a at which the sidewalls 10, 11 are slanted may be 15 DEG , and the grooves 8 may be disposed at 75 DEG to the circumferential. The groove sidewalls may be parallel to one another as shown in Fig. 2 or such that each groove is of V-section. The grooves 8 may be located in ribs bounded by circumferential grooves 6. <IMAGE> |
