Patent ID: 8851130

Claim:
A tire having plural rows of block land portions formed by demarcation by providing at least three circumferential grooves extending along tire circumferential direction and plural lateral grooves each in communication with a pair of adjacent two circumferential grooves of the at least three circumferential grooves; in at least two rows of block land portions adjacent to each other with a circumferential groove therebetween, among the rows of block land portions, the respective rows of block land portions are disposed to be offset with respect to each other in the tire circumferential direction; the extending direction of a narrow groove portion of the circumferential grooves each between the block land portions adjacent to each other in the tire widthwise direction is inclined with respect to the tire widthwise direction and tire circumferential direction; and a distance between the block land portions adjacent to each other in the tire widthwise direction is shorter than a distance between the block land portions adjacent to each other in the tire circumferential direction, wherein the ratio of the length in the circumferential direction of a block land portion with respect to a distance between block land portions adjacent to each other in the tire circumferential direction is in the range of 1:0.17 to 1:0.05, and the ratio (d 1 :d 2 ) of a distance (d 2 ) between block land portions adjacent to each other in the tire widthwise direction and a distance (d 1 ) between block land portions adjacent to each other in the tire circumferential direction is in the range of 1:0.7 to 1:0.4.