A tire is provided having a tread region that includes continuous ribs which extend diagonally across the transverse direction of the tire. Partial sipes are provided at the trailing edges of the ribs. Full sipes can also be provided with the partial sipes. The ribs may form various patterns such as e.g., an S-shaped pattern, chevron pattern, and others. The tire provides improved traction performance over non-diagonal ribs while still providing desirable rolling resistance performance and control of irregular wear.

A tyre comprises a tread portion comprising a first tread edge and a second tread edge, and the tread portion is provided with a plurality of oblique grooves. The plurality of the oblique grooves includes a first oblique groove and a second oblique groove. Each of the first oblique grooves and the second oblique grooves has an open end and a terminating end, and a first steeply-inclined portion positioned on a side of the open end, a second steeply-inclined portion positioned on a side of the terminating end, and a mildly-inclined portion positioned between them. The second steeply-inclined portion includes a part in which an angle thereof with respect to a tyre circumferential direction is gradually decreased as it goes toward the terminating end.

A tire 1 comprises a tread portion 2 whose position when mounted on a vehicle is specified. The tread portion 2 comprises an outer tread edge (To), an inner tread edge (Ti), a plurality of main grooves 10, and a plurality of land regions 15. The main grooves 10 include a first main groove 11 whose groove edges are both positioned on an inner-tread-edge-(Ti) side of a tire equator (C), a second main groove 12 arranged on an inner-tread-edge-(Ti) side of the first main groove 11, and a third main groove 13 arranged between the tire equator (C) and the outer tread edge (To) and having a groove width smaller than the first and second main grooves 11 and 12. The land regions 15 include an inner middle land region 16 and an outer middle land region 17 having an axial width larger than the inner middle land region 16.

A motorcycle tyre has a tread band including a central portion and two shoulder portions arranged at axially opposite sides of the central portion. The central portion includes a first plurality of grooves extended according to a substantially longitudinal direction and alternatively arranged at opposite sides of the equatorial plane of the tyre. Each groove of the first plurality of grooves has a substantially curvilinear course such as to form a concavity. The central portion further includes a sub-portion substantially free of grooves placed astride the equatorial plane of the tyre. Each of the shoulder portions includes a second plurality of grooves arranged obliquely relative to the equatorial plane of the tyre.

A tire that can improve braking performance on a dry road surface and wet performance is provided. The tire includes a tread portion 2. The tread portion 2 includes a shoulder land portion 5 disposed at an endmost tread edge side. The shoulder land portion 5 has a plurality of shoulder lateral grooves 10 that fully traverse the shoulder land portion 5. Each shoulder lateral groove 10 includes, in a transverse cross-section orthogonal to a longitudinal direction thereof, a bottom portion 11, a groove wall main body 12 extending from the bottom portion 11 outward in a tire radial direction, and a chamfered portion 15 between a ground-contact surface of the shoulder land portion 5 and the groove wall main body 12. The chamfered portion 15 is titled at an angle of 5 to 30° relative to a tread profile 13 obtained by extending the ground-contact surface.

In a pneumatic tire, a plurality of first land portions are arrayed adjacent to each other in a tire circumferential direction, and a plurality of second land portions are arrayed adjacent to each other in the tire circumferential direction. Moreover, the first land portions and the second land portions are each arrayed in a staggered manner along a tire equatorial plane. Additionally, the first land portions and the second land portions each include a plurality of through grooves that extend through the first and second land portions and open to a pair of inclined main grooves and a plurality of blocks defined by the through grooves.

A tire has a tread portion bound with an intended tire rotational direction. The tread portion includes a first tread edge and a second tread edge. The tread portion is provided with first oblique grooves extending obliquely toward a heel side in the tire rotational direction from the first tread edge toward a tire equator side, second oblique grooves extending obliquely toward the heel side from the second tread edge toward the tire equator side, and first circumferential grooves each connecting a respective pair of the first oblique grooves adjacent to each other in a tire circumferential direction. The first oblique grooves have the tire equator side end portions intersecting with the second oblique grooves. The second oblique grooves have the tire equator side end portions intersecting with the first oblique grooves. The first circumferential grooves have groove widths each increasing toward the heel side in the tire rotational direction.

A tire, the speed rating of which is at least V, comprises a tread, having a volumetric void ratio at least equal to 2% and at most equal to 20%, having a central part Pc comprising at least one groove, and two lateral parts PI each having a volumetric void ratio at most equal to 2%. The central part Pc of the tread has an axial width at most equal to one third of the axial width LBDR of the tread, and any portion of the central part Pc of the tread that is circumferentially delimited by two meridian planes separated by a circumferential distance dc equal to one tenth of the outer perimeter P of the tire comprises at least one and at most three grooves that open onto the meridian planes delimiting the portion in question.

A pneumatic vehicle tire, in particular a commercial vehicle tire, having a tread with transverse grooves (3, 3′), which are continuous over the tread width and which, at least in sections, are formed to the profile depth and are the main grooves of the tread. Circumferential grooves (4) that run adjacent to one another in pairs and parallel to one another, at an angle (α) with respect to the circumferential direction of 10° to 30° and have a smaller depth than the profile depth divide the tread, with two sections (4a) in each case between three transverse grooves (3, 3′) following one another in the circumferential direction, into profile blocks (1, 2), wherein pairs of circumferential grooves following one another in the circumferential direction are offset with respect to one another in the axial direction, such that the circumferential grooves (4) of the pairs of circumferential grooves begin and end at substantially the same axial positions, wherein each circumferential groove (4) reaches, with a section (4b) running beyond a transverse groove (3), into a middle profile block (2) present between the circumferential grooves (4), and wherein each circumferential groove (4) is formed shallower in at least one section (4a, 4b) than in its other sections or its other section.

A heavy truck tire tread (12) is provided that has a tread groove (14) that is not oriented completely in the longitudinal direction so as to extend in both the longitudinal direction and the lateral direction. The tread groove is at least partially defined by a leading edge wall and a trailing edge wall and a bottom surface. A stone ejector (24) engages either the leading edge wall or the trailing edge wall but not both the leading edge wall and the trailing edge wall. The stone ejector faces the non-engaged leading edge wall or the trailing edge wall. Also, the tread has an average void depth that does not go past a twenty percent line (36). The twenty percent line (36) is twenty percent of a full void depth (40) located from the outer surface of the tread, and the average void depth does not include decouple grooves and tread outboard from them.