| 摘要 |
A pneumatic tire having a tread surface formed with a groove portion includes a bag-like groove. The bag-like groove includes a groove head portion having a partially opened substantially loop-like inner wall, and a groove neck portion which is in communication with the opening of the groove head portion through a groove width smaller than a maximum groove width of the groove head portion. The groove head portion of the bag-like groove is formed with a projection rising from a groove bottom surface. |
