| 主权项 |
1. A tire comprising:
a block partitioned by a groove portion that includes a circumferential groove positioned at an outer side in a tread width direction from a tire equator line and extending in a tire circumferential direction and a lug groove extending in the tread width direction, in a tread planar view, wherein a tread width direction outer end of the block is adjacent to the circumferential groove, the tread width direction outer end is distanced from the tire equator line more than a tread width direction inner end of the block, the block includes a step portion formed at a tire circumferential end, in which a height of the block gradually reduces as it goes towards an outer side in the tire circumferential direction from the center of the block, the step portion includes a step surface that is a surface facing an outer side in a tire radial direction, and that includes at least a first step surface facing the outer side in the tire radial direction and lower by one step from a tread surface and a second step surface facing the outer side in the tire radial direction and lower by two steps from the tread surface, the step surface extends from the tread width direction outer end towards the tread width direction inner end, when a first direction is defined as a direction extending from the tread width direction outer end towards the tread width direction inner end in the step surface, a first direction length of the second step surface is longer than a first direction length of the first step surface, when a first direction length of a side surface of the block is defined as a length L, the first direction length of the first step surface is defined as a length L1, and the first direction length of the second step surface is defined as a length L2, at the tire circumferential end including the step portion, and the length L1 and the length L2 satisfy 0.1L≦L1≦0.3L, and 2L1≦L2. |
