Patent ID: 8245744

Claim:
A tyre comprising: a tread having an equatorial plane and at least one raised element, which has a longitudinal axis, respective lateral edges which are substantially parallel to the equatorial plane, and sipes which are crosswise to the longitudinal axis, wherein the sipes include a plurality of Z-shaped sipes each having three consecutive portions: a first and a third portion which are end portions originating at respective said lateral edges and a second portion which is an intermediate portion connected to the first portion at a first point and to the third portion at a second point and slopes with respect to the longitudinal axis, wherein the first point is located a first distance from the lateral edge from which the first portion originates; and the second point is located a second distance from the lateral edge from which the first portion originates, and the second distance is less than the first distance, wherein the raised element is a continuous circumferential rib having a succession of first Z-shaped sipes and a succession of second Z-shaped sipes, each of which is interposed between two first Z-shaped sipes, wherein the first and second portion of each first Z-shaped sipe are located on the opposite side of the longitudinal axis of the raised element with respect to the first and second portion of each second Z-shaped sipe so that the first and second portion of each first Z-shaped sipe are closer to one of the lateral edges than the first and second portion of each second Z-shaped sipe, while the first and second portion of each second Z-shaped sipe are closer to the other of the lateral edges on the opposite side of the longitudinal axis than the first and second portion of each first Z-shaped sipe.