| 摘要 |
A pneumatic tire comprises at least one sidewall portion (3) provided with a serration pattern (s) on its outer surface (3a), the serration pattern (s) comprising a plurality of first groups being repeatedly arranged in the circumferential direction of the tire, each first group comprising a plurality of ridges which are arranged using gradually increasing pitches toward a first circumferential direction of the tire, wherein a region provided with the serration pattern (s) on the outer surface (3a) of the sidewall portion has a radius of curvature (Ra) in a range of not more than 70mm in a cross section including a tire axis under a standard condition such that the tire is mounted on a standard rim and inflated to a standard pressure, but no tire load is loaded. |
