Pneumatic tires for passenger cars

A pneumatic tire for passenger cars comprising;

• a directional tread pattern defined by at least one circumferential rib and a plurality of directional slant grooves arranged on both sides of the circumferential rib at given intervals in a circumferential direction of the tire, at least the directional slant grooves including directional low-slant grooves each having a small inclination angle with respect to the circumferential direction at a side near to an equatorial plane of the tire and extending from each side of the circumferential rib toward a side end of a tread, the directional slant grooves including directional high-slant grooves each having a large inclination angle with respect to the circumferential direction in addition to the directional low-slant grooves, and wherein plural blocks are formed between adjacent directional low-slant grooves at given intervals in the circumferential direction, and a block among said plural blocks is joined to the rib and has a surface such that a height of a preceding ground contact side of the block is lower than a height of a subsequent ground contact side of the block during the forward rotation of the tire, a trailing edge of the block is defined by a high slant groove, the height of a portion of the block at said trailing edge of the block is substantially the same as the height of the at least one rib, the surface of the block and a sidewall of the rib intersect so as to define a line which is inclined with respect to the radial direction of the tire.