| 摘要 |
PROBLEM TO BE SOLVED: To effectively suppress increase in temperature of a tread part caused by the traveling of a vehicle.SOLUTION: In a tire 1, a plurality of projections 500 are provided on a groove bottom 50B2 of a groove part and the projections 500 extend toward the other side wall 50B3 facing one side wall 50B1 from one side wall 50B1 forming the groove part and are provided at every predetermined interval in the groove part. If the length of the projections 500 is defined as L and the predetermined interval is defined as P, the tire satisfies the relation of 0.75L≤P≤10L. If the width of a projection lower end part 500b in a projection end part is defined as Wfe and the width of the projection lower end part 500b in a projection central part 500c is defined as Wfc, the tire satisfies the relation of Wfc<Wfe≤0.5L. The width Wf of the projection lower end part 500b in an extension direction ged of the groove part is changed in a width direction gwd of the groove part. |
