Tread for a motor vehicle tire

A tire for a motor vehicle wheel comprising a tread pattern having

• a plurality of axially extending transverse grooves;
• at least two circumferential straight grooves dividing the axial width of the tread into at least two circumferentially extending axially outer rows of circumferentially spaced apart substantially identically shaped shoulder blocks of substantially parallelepiped configuration and
• at least one central row of blocks having a plurality of circumferentially spaced apart substantially identically shaped central blocks, all of the blocks of any row of said at least one central row being circumferentially aligned with each other between two of said at least two circumferential straight grooves and each of said rows being so aligned within that row,
• each of said central blocks, along its circumferential length, having a pair of longitudinal sides, oriented substantially along the direction of rolling of the tire and a pair of transverse sides oriented transversely to the direction of rolling, each transverse side having two parallel lateral segments between which there extends an intermediate segment oriented to form an obtuse angle with the lateral segments, said lateral segments having an inclination, with respect to the axis of rotation that is less than the inclination of the intermediate segment, each of the central blocks being traversed by at least one pair of parallel sipes, each of which extends in alignment with one of the lateral segments of one of the transverse sides,
• each of said shoulder and central blocks having at least one generally axially extending sipe having a width not greater than one fifth of a width of said transverse grooves,
• said sipes in the shoulder blocks being at a first angle to the rotational axis of the tire,
• said sipes of the central blocks lying at a second angle of inclination with respect to the rotational axis of the tire that is greater than said first angle.