Patent ID: 8672005

Claim:
A pneumatic tire having a block-type tread pattern for which a tire mounting position with respect to a vehicle and a tire rotational direction are specified, comprising a tread portion having a pair of tread edges which are an outside tread edge and an inside tread edge, wherein the tread portion is provided with a plurality of oblique grooves extending from the outside tread edge toward the inside tread edge beyond the tire equator, while inclining to one circumferential direction corresponding to the tire rotational direction at angles of from 20 to 45 degrees with respect to said one circumferential direction, and a plurality of connecting grooves extending between the oblique grooves at angles β of from 90 to 180 degrees with respect to said one circumferential direction, wherein between every two of the adjacent oblique grooves, disposed are three or more of the connecting grooves which are gradually decreased in the angle β from the outside tread edge towards the inside tread edge, whereby a plurality of oblique blocks are formed between every two of the adjacent oblique grooves, differences between adjacent angles β being not less than 15 degrees, and wherein the tread portion is further provided with circumferentially long blocks disposed along the inside tread edge, each block having a maximum circumferential length and having a maximum axial width L15 not more than 0.45 times its maximum circumferential length.