Provided is a tire exhibiting both improved partial wear resistance and improved quietness. The tire has block land portion arrays 5 defined on a tread portion 1. Between adjacent two block land portion arrays 5 sandwiching a circumferential groove 2, block land portions 4 constituting the block land portions 5 are arranged so as to be positionally displaced from each other in the tire circumferential direction, and a groove portion 6 between the block land portions adjacent in the tire width direction extends obliquely with respect to the tire width direction and the tire circumferential direction. Further, in the adjacent block land portion arrays 5, the block land portion 4 is adjacent to at least two block land portions by way of the groove portion 6 between the block land portions adjacent in the tire width direction, and two side walls 9, 10 of the adjacent block land portion 4 has projected lengths different from each other, the projected lengths being obtained by projecting the side walls to a line parallel to the tire circumferential direction. Yet further, the block land portions 4 adjacent in the tire width direction are disposed in a point-symmetric manner by way of the groove portion 6 between the block land portions 4 adjacent in the tire width direction.