Patent ID: 9649888
Date: 2017-05-16
CPC Classifications: B60C

Claim:
1. A tire comprising: a circumferential groove extending in a tire circumferential direction; and a land portion that is adjacent to the circumferential groove and that extends in the tire circumferential direction, wherein the circumferential groove is formed with: a first swelling portion that swells from one lateral wall of the circumferential groove toward a center in a widthwise direction of the circumferential groove; and a second swelling portion that swells from the other lateral wall of the circumferential groove toward the center in the widthwise direction of the circumferential groove, the first swelling portion has, in a tread surface view of the tire, a tapered shape in which a size in the tread widthwise direction is narrower as it goes in a first direction in the tire circumferential direction, the second swelling portion has, in the tread surface view of the tire, a tapered shape in which a size in the tread widthwise direction is narrower as it goes in a second direction that is opposite to the first direction in the tire circumferential direction, the first swelling portion and the second swelling portion are formed in plural with a predetermined interval in the tire circumferential direction, and a groove extending in the tire circumferential direction is formed between the first swelling portion and the second swelling portion opposite to the first swelling portion in the tread widthwise direction, wherein the groove is formed to be inclined relative to the tire circumferential direction in the tread surface view of the tire, and wherein a width of the groove between a first outward end of the groove at one lateral wall and a leading edge of the groove becomes narrower in the tread widthwise direction along the entire first outward end as the groove extends in the first direction.