Patent ID: 8875757
Filing Date: 2014-11-04
Classification: B60C,Y10S

Abstract:
1. A pneumatic tire in which a tread surface is provided with a groove portion comprising not less than three main grooves continuously extending in a tire circumferential direction, and a land portion including block rows separated from adjacent block rows by the main grooves, wherein the land portion includes: a first edge portion having a depression row formed in a block row by arranging long hole shaped depressions extending along at least one of the main grooves in the tire circumferential direction; and a second edge portion extending along at least one of the main grooves while being different in position in a tire width direction from the first edge portion, and not having the depression row; and wherein the block rows are formed with horizontal grooves that are divided in a midstream, such that adjacent blocks of the block rows in the tire circumferential direction are partly connected with each other, wherein a reinforcing portion for increasing rigidity of a first inner wall portion of the depressions is provided in the first inner wall portion located at a near side to an edge end of the first edge portion, rather than at a second inner wall portion of the depressions located at a far side from the edge end, and further wherein the tread surface has a sipe in a block, with the sipe extending from a depression in one direction only to open in a single main groove.