Abstract: A winter tyre is described having a tread band wherein a plurality of blocks configured to obtain optimal performance both on snow-covered roads and on dry and wet roads in specific conditions of use (in particular during acceleration, braking or cornering with high power vehicles). Each of the aforementioned blocks has at least one sipe that defines two adjacent block portions in the respective block, each block portion having a respective surface facing the sipe. The surface has a radially outer portion having a profile which is substantially undulating, a radially inner portion also having a profile which is substantially undulating and an intermediate portion arranged between the radially outer portion and the radially inner portion and having a profile which is substantially rectilinear.

Abstract: A tyre for vehicle wheels comprises a tread band on which a radially external tread surface and a tread pattern are defined; the tread band comprising: a central region of the tread band, extending circumferentially about an equatorial plane of the tyre over at least 30% of an effective width of the tread band; a first and a second shoulder region extending, on opposite sides of the central region, each over at least 20% of the effective width of the tread band; the tread pattern, on the first and second shoulder regions and the central region, comprises transverse grooves comprising a bottom and a pair of opposed lateral walls. These lateral walls extending from the bottom towards the tread surface with a first inclination, and joining to the tread surface by chamfers having a second inclination greater than the first inclination relative to the radial direction.

Abstract: A tyre having a tread is described. The tyre has a central portion located across an equatorial plane, a first shoulder portion located towards an outer side of the tyre and a second shoulder portion located towards an inner side of the tyre. The central portion is separated from the first shoulder portion by two first circumferential grooves. The first shoulder portion and the second shoulder portion have a plurality of first transverse grooves having a first end located substantially at the respective edge of the tread, having a width greater than or equal to about 4 mm and an axial extension equal to at least 50% of the width of the shoulder portion in which they are located.

Abstract: A tyre having a tread is described. The tyre has a central portion located across an equatorial plane, a first shoulder portion located towards an outer side of the tyre and a second shoulder portion located towards an inner side of the tyre. The central portion is separated from the first shoulder portion by two first circumferential grooves. The first shoulder portion and the second shoulder portion have a plurality of first transverse grooves having a first end located substantially at the respective edge of the tread, having a width greater than or equal to about 4 mm and an axial extension equal to at least 50% of the width of the shoulder portion in which they are located.

Abstract: A tyre for vehicle wheels having a tread pattern includes: a) two circumferential grooves, which define a first and a second shoulder region, and one central region; b) a plurality of asymmetric transverse grooves having a substantially “V” shape, which extend for the whole width of the tread, including an alternate sequence of a first and a second asymmetric transverse groove defining an alternate sequence of a first and a second asymmetric module; and c) a plurality of lateral transverse grooves, which includes one first lateral transverse groove extending for the whole width of the first shoulder region and for a portion of the central region of the first asymmetric modules, and one second lateral transverse groove extending for the whole width of the second shoulder region and for a portion of the central region of the second asymmetric modules.

Abstract: A tyre for vehicle wheels having a tread pattern includes: a) two circumferential grooves, which define a first and a second shoulder region, and one central region; b) a plurality of asymmetric transverse grooves having a substantially “V” shape, which extend for the whole width of the tread, including an alternate sequence of a first and a second asymmetric transverse groove defining an alternate sequence of a first and a second asymmetric module; and c) a plurality of lateral transverse grooves, which includes one first lateral transverse groove extending for the whole width of the first shoulder region and for a portion of the central region of the first asymmetric modules, and one second lateral transverse groove extending for the whole width of the second shoulder region and for a portion of the central region of the second asymmetric modules.

Abstract: A tire for vehicle wheels having a tread pattern includes: a) two circumferential grooves, which define a first and a second shoulder region, and one central region; b) a plurality of asymmetric transverse grooves having a substantially “V” shape, which extend for the whole width of the tread, including an alternate sequence of a first and a second asymmetric transverse groove defining an alternate sequence of a first and a second asymmetric module; and c) a plurality of lateral transverse grooves, which includes one first lateral transverse groove extending for the whole width of the first shoulder region and for a portion of the central region of the first asymmetric modules, and one second lateral transverse groove extending for the whole width of the second shoulder region and for a portion of the central region of the second asymmetric modules.

Abstract: Tire for vehicle wheels includes a tread pattern defined by modules arranged circumferentially along the tread, each of the modules including: a) a first slanted transverse groove extending from a first shoulder portion in the first half of the tread to a first end located in the second half of the tread; b) a second slanted transverse groove extending from a second shoulder portion in the second half of the tread to a second end located in the first half of the tread; c) a third slanted transverse groove extending from the first shoulder portion to a third end located in the first half of the tread; d) a fourth slanted transverse groove extending from the second shoulder portion to a fourth end located in the second half of the tread; wherein: e) the first end is substantially located at an intermediate portion of the second slanted transverse groove; and f) the second end is substantially located at an intermediate portion of the first slanted transverse groove of a circumferentially adjacent module.

Abstract: A tyre (1) for vehicle wheels comprises a tread band (2) on which a radially external tread surface (3) and a tread pattern are defined, and in which the following are defined: —a central region (5) of the tread band, extending circumferentially about an equatorial plane (X) of the tyre over a width equal to at least 30% of an effective width (L) of the tread band; —a first and a second shoulder region (6, 7) extending, respectively, on opposite sides of the central region, in an axially outer position of the tread band, each over a width equal to at least 20% of an effective width (L) of the tread band; the tread pattern, on each of the first and second shoulder regions and the central region, comprises a respective plurality of transverse grooves (20; 30; 40; 50) comprising a bottom (23; 33; 43; 53) and a pair of lateral walls (24, 25; 34, 35; 44, 45; 54, 55) facing one another.

Abstract: A winter tyre is described having a tread band wherein a plurality of blocks configured to obtain optimal performance both on snow-covered roads and on dry and wet roads in specific conditions of use (in particular during acceleration, braking or cornering with high power vehicles). Each of the aforementioned blocks has at least one sipe that defines two adjacent block portions in the respective block, each block portion having a respective surface facing the sipe. The surface has a radially outer portion having a profile which is substantially undulating, a radially inner portion also having a profile which is substantially undulating and an intermediate portion arranged between the radially outer portion and the radially inner portion and having a profile which is substantially rectilinear.

Abstract: A tire for a vehicle wheel includes a tread band. The tread band includes a pattern, including at least two circumferential portions, an elongated ridge, and at least two shoulder blocks. The at least two circumferential portions are disposed in axial side-by-side relationship. At least one of the circumferential portions includes a first geometric module repeated along a circumferential extension direction of the tire. The elongated ridge is bounded by two grooves oblique to the circumferential extension direction and is divided into a plurality of intermediate blocks with respect to an axial extension direction of the tread band. The intermediate blocks are bounded by a plurality of cuts substantially transverse to the elongated ridge. The at least two shoulder blocks are associated with the elongated ridge, are circumferentially aligned along a side edge of the tread band, and are bounded by grooves oriented substantially transversely to the circumferential extension direction.