A tire comprises a tread portion 2 having an outboard tread edge To and an inboard tread edge Ti and provided with an outboard shoulder main groove 3 and an outboard crown main groove 4 extending continuously in the tire circumferential direction so as to define an outboard middle land region 10 therebetween. The outboard middle land region 10 comprises outboard middle blocks 17 circumferentially divided by outboard middle lateral grooves 16. Each of the outboard middle blocks 17 is provided with outboard middle sipes 20 extending zigzag in the tire axial direction, wherein each of the outboard middle sipes 20 has an axially outer end terminated within the outboard middle block 17, and the above-said a plurality of outboard middle sipes 20 include at least one outboard middle sipe whose axially inner end is connected with the outboard crown main groove 4.

A tire comprises a tread portion 2 provided with a first main groove 3 and a second main groove 4 each extending in a zigzag manner and a land region 10 defined between them. The land region 10 is provided with a longitudinal sipe 15 extending in a zigzag manner in the tire circumferential direction, first lug grooves 16, and second lug grooves 17. The land region 10 comprises first blocks 21 divided by the longitudinal sipe 15 and the first lug grooves 16, and second blocks 22 divided by the longitudinal sipe 15 and the second lug grooves 17. Each of the first blocks 21 and the second blocks 22 is provided with not less than three transverse sipes 25 extending across the entire width of the each of the first blocks 21 and the second blocks 22.

A tire includes a tread portion provided with a plurality of blocks. At least one of the plurality of blocks is provided with a sipe. The sipe extends in a sipe longitudinal direction to form a zigzag opening configuration on a ground contact surface of the at least one of the plurality of blocks. The sipe extends inwardly in a tire radial direction such that the zigzag opening configuration oscillates in the sipe longitudinal direction repeatedly with a total amplitude and a wavelength while maintaining the zigzag opening configuration. A half of the wavelength of the sipe is in a range of from 0.10 to 0.24 times a maximum depth of the sipe, and a slope of the half of the wavelength with respect to the total amplitude has an angle in a range of from 45 to 65 degrees.

A tire tread formed from a rubber composition having a functionalized SBR and a BR that is reinforced with between 95 phr and 125 phr of a silica filler and includes a plasticizing system to adjust the glass transition temperature to be between −30° C. and −15° C. and the dynamic modulus G* at 60° C. to be between 0.9 MPa and 1.15 MPa. The tread includes central tread blocks having an average central tread block length of between 6.5 mm and 10 mm and shoulder tread blocks having an average shoulder tread block length of between 10 mm and 20 mm. Furthermore the tread is limited to being between 6.5 mm and 7.7 mm thick. In particular embodiments the rubber composition may be just the functionalized SBR.

A pneumatic tire comprises in a tread surface thereof a land portion that comprises a plurality of blocks. Each of the blocks comprises in a contact patch thereof a plurality of narrow shallow grooves and a plurality of recessed portions disposed separated from the narrow shallow grooves. The narrow shallow grooves have a groove width of from 0.2 mm to 0.7 mm and a groove depth of from 0.2 mm to 0.7 mm. The recessed portions have the same depth as the narrow shallow grooves.

In a tire, width direction edges of lands corresponding to edges of lug grooves include width direction bent portions bent in a circumferential direction. Width direction bent portions closest to a land center portion line and disposed on outer and inner sides in a width direction are outer and inner bent portions, respectively. The lands have a width w1 in the width direction from the outermost side position to the outer bent portion of the lands in the width direction and a width w2 in the width direction from the innermost side position to the inner bent portion of the lands in the width direction, the widths w1, w2 satisfying w2<w1, and a maximum width wb of the lands in the width direction and a width wc between the outer bent portion and the inner bent portion in the width direction satisfy 0.2≤(wc/wb)≤0.6.

The tread has four grooves that delimit a central, intermediate and edge regions. Each intermediate region is divided into elongated raised elements that delimit oblique grooves which open into the circumferential grooves and are inclined at an average angle of between 30 and 60 degrees relative to the circumferential direction. The raised elements have an average circumferential length of between 50 and 70 mm. The depth of the oblique grooves is at least 30% of the depth of the circumferential grooves. Each raised element has a plurality of sipes that open into the oblique grooves. Each raised element also has an internal and oblique cut that has a total depth at least equal to 75% of the thickness PMU to be worn away. The oblique cut has a wide part and a part that forms a sipe that extends by a channel that forms a new groove after wear.

A tread for a tire includes a circumferential center tread region comprising a plurality of block elements arranged in a symmetric pattern on opposite sides of a tire equatorial centerplane, a pair of circumferential shoulder tread regions each comprising a plurality of block elements arranged in a symmetric pattern on opposite sides of a tire equatorial centerplane, a leading edge first serrated construction disposed on a leading edge of one of the block elements, and a trailing edge second serrated construction disposed on a trailing edge of one of the block elements.

A tire includes a plurality of circumferential main grooves extending in a tire circumferential direction, and a pair of shoulder land portions and one or more rows of center land portions defined by the plurality of circumferential main grooves. Further, at least one of the pair of shoulder land portions includes a plurality of shoulder lug grooves and a plurality of shoulder blocks defined and formed by the plurality of shoulder lug grooves. Additionally, at least a part of the plurality of shoulder blocks includes a notch portion that connects edge portions separated from a tire ground contact edge and a buttress portion. Additionally, the notch portion has a step-shaped wall surface in a cross-sectional view in a tire meridian direction.

A shear-controlled tire tread includes a plurality of narrow channels disposed generally perpendicular to a rolling direction. Each narrow channel includes a heel side, a toe side, and a valley connecting the heel side and the toe side, and a first plurality of ridges disposed on a heel side and a second plurality of ridges disposed on a toe side. The first plurality of ridges disposed on a heel side and the second plurality of ridges disposed on a toe side are offset and form interacting friction surfaces when a heel side of collapses toward a toe side or a toe side collapses toward a heel side.