| 摘要 |
The irregularities on a sidewall surface are hidden to improve the appearance of a tire. A serration unit including a plurality of ridge groups divided in the circumferential direction of the tire is formed on the sidewall surface. The ridge groups include a plurality of ridges with different angles (θ) in the circumferential direction of the tire. The ridges of each ridge group are arranged in ascending order of the angles (θ). In the ridge groups, the intervals between the ridges in the circumferential direction of the tire are constant. |
