Patent ID: 9469160
Filing Date: 2016-10-18
CPC Classification: B60C

Claim Text:
1. A tire comprising: a plurality of blocks formed in a tread section by circumferential direction grooves and lateral grooves, wherein: each of the blocks is a polygonal shape viewed from the tread face side, the polygonal shape comprising long sides, adjacent to the circumferential direction grooves, and short sides, and wherein a cutout portion is formed on the side of at least one of the long sides of the blocks, the circumferential direction grooves include a pair of center grooves, and a center block row of the blocks is disposed between the center grooves on an equatorial plane of the tire, the center grooves extend in a zigzag shape, and center lug grooves connect together locations where a separation distance between the center grooves is smallest, the center lug grooves being formed at the center block row, wherein the long sides are formed together with the cutout portions on both the tire width direction sides of the block, wherein: the external profile of each of the cutout portions, when seen in plan view, is a triangular shape including a bottom side formed by at least a portion of the long side, and a long sloping side and a short sloping side having different lengths from each other; and along one tire circumferential direction, the disposed sequence of the long sloping side and the short sloping side is different on one tire width direction side of the block to on the other width direction side of the block, wherein: the shape of the cutout portions is symmetrical about a point at the center of the block; and the block comprises a block traversing groove that is open at both tire width direction sides of the block at a first position and a second position, respectively, each of the first and second positions corresponds to a vertex formed by the bottom side and the long sloping side of the cutout portion having a triangular shape, wherein: the plurality of blocks comprises a shoulder block row including shoulder blocks, a shoulder block of the shoulder blocks comprising a fine groove connected to an outer groove of the circumferential direction grooves at one end and the other end of the fine groove terminating within the shoulder block, and wherein a tire width direction separation distance between one side width direction end of the cutout portion and the other side width direction end of the cutout portion is in the range of 7 to 12% of the tire width direction separation distance between one side width direction end of the corresponding block and the other side width direction end of the block.