| 主权项 |
1. A tire comprising:
a tread section with a groove portion formed to extend in a tire circumferential direction; and a plurality of projection parts provided on a groove bottom of the groove portion, wherein each of the projection parts extends from one of side walls forming the groove portion to the other side wall opposed to the one side wall, the projection parts are arranged at predetermined intervals in the groove portion, a relationship of 0.75L≦P≦10L is satisfied in a tread face view of the tire where L denotes a length of the projection parts along a groove center line passing a widthwise center of the groove portion, and P denotes the predetermined intervals, and a relationship of TWf/cos θf≦0.9W is satisfied in a tread face view of the tire where W denotes a groove width of the groove portion, TWf denotes a width of the projection parts in a direction orthogonal to an extending direction of the projection parts, and θf denotes an angle formed by the extending direction of the projection parts and the groove center line in a direction opposite to a rotation direction of the tire. |
