| 摘要 |
<p>A pneumatic tire (1) comprising a pair of beads (2), and a carcass ply (12) consisting of a main body (13) located axially inside the beads and outer ply portions (14,15) extending along the main body of the carcass ply axially outside each of the beads. A number of circumferentially spaced recesses (30) are provided in the outer surface (28) of the tire between a radially outer end of each of the outer ply portions and a location corresponding to the maximum width (M) of the tire, and the recesses have a depth (G) equal to 1/10 to 1/2 the thickness (C) of those portions of the tire which are provided with the recesses. The inclined angle of a base portion (4) of each of the beads is about 15 DEG relative to the rotational axis of the tire. In the tire, 0.4P </= W </= 0.8P and B </= 0.06D in which P, B, W and D are respectively the circumferential pitch of the recesses, the mininum distance between the adjacent recesses, the circumferential width of each of the recesses which is obtained by deducting the minimum distance B from the pitch P, and the diameter of a rim base, respectively. <IMAGE></p> |
