The tread pattern of the pneumatic tire includes an outer main groove, shoulder lug grooves, and vertical sipes. The outer main groove extends in the tire circumferential direction on an outer side of the tire centerline in the tire width direction. The shoulder lug grooves are spaced apart in the tire circumferential direction and provided in the shoulder land portion regions on an outer side of the outer main groove in the tire width direction, extend from the outer side in the tire width direction toward the outer main groove, are closed in a shoulder land portion region. Each of the vertical sipes has a narrower width than each of the shoulder lug grooves, crosses each of the shoulder lug grooves and extends in the tire circumferential direction. Each of the vertical sipes has a depth greater than a groove depth of each of the shoulder lug grooves.

A tire includes a tread portion including at least one land portion having axially spaced first and second ends. The at least one land portion is provided with lateral grooves extending from the first end to terminal ends terminating within the at least one land portion, first sipes each extending along a tire circumferential direction to connect a pair of lateral grooves arranged adjacently in the tire circumferential direction, second sipes extending from the first end toward the first sipes, and third sipes extending from the second end toward the first sipes. The second sipes and the third sipes are arranged without intersecting the lateral grooves.

A tire has a first block that is partitioned by a first pair of major grooves, the first block land making up a first block column arranged along a tire circumferential direction. The first block land has a first closed sipe and a first open sipe. The first closed sipe appears wavelike as seen in plan view, extends in a tire width direction, and has two ends that respectively terminate within the first block. The first open sipe appears wavelike as seen in plan view and has two ends that respectively open into the first pair of major grooves central location in the tire circumferential direction of the first block land. An amplitude of the first open sipe is greater than amplitude of the first closed sipe. A wavelength of the first open sipe is less than wavelength of the first closed sipe.

In a pneumatic tire 10 according to the present invention, as an average sipe interval hc defined by an average interval of sipes adjacent to each other in a tire circumferential direction in a center portion block, which is a block arranged at a position including a tire equatorial line, and an average sipe interval hs is defined in a shoulder portion block, which is a block located at an ground contact end in a tire width direction, a relation of 1.05(hs/hc)4.00 is fulfilled.

Tire tread (1) is divided into central part (20) and edge parts (30), central part (20) having width Lc between 40% and 90% of total width W of the tread. Edge parts (30) do not have any transverse cuts. Central part (20) has a tread pattern with circumferentially oriented sipe (21) and transversely oriented sipes (22, 22, 22) distributed around the periphery of the tread, such sipes having a depth at least equal to 60% of thickness E of material to be worn away and being interconnected to form a network. Such sipes are continued by hidden channels (210, 220). Central part (20) is delimited axially by transverse sipes (22, 22), each of which ends in end channel (221, 221) that opens onto tread surface (10) and extends into the thickness of the tread, and each end channel (221, 221) is connected to the network formed by the hidden channels.

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 pneumatic tire including a block that is partitioned by plural circumferential direction grooves extending along a tire circumferential direction and by plural lug grooves extending diagonally with respect to the tire circumferential direction and provided with two or more bend portions, and at least one inclined fine groove that extends diagonally with respect to the tire circumferential direction, that is provided with at least two bend or more portions inside a single block, and that divides the block.

A tread for a tire includes a center rib formed by two circumferential main grooves extending along a tire circumferential direction in a center of a tread width direction. Each circumferential main groove being the same axial distance from a tire equatorial plane of the tread. The center rib has a plurality of first main inclined grooves and a plurality of second main inclined grooves. The first and second main inclined grooves are inclined oppositely with respect to the tire circumferential direction such that the first and second main inclined grooves become distanced from the tire equatorial plane from trailing edges in a tire rotational direction toward leading edges. One zigzag shaped central groove is disposed on one side of the tire equatorial plane and the other zigzag shaped central groove is disposed on an opposite side of the tire equatorial plane.

This pneumatic tire has a tread part partitioned by four main grooves into a center land part, an outer intermediate land part, an inner intermediate land part, an outer shoulder land part, and an inner shoulder land part. The center land part is formed with center lug grooves in which the installation outer side is narrower than the installation inner side. The outer intermediate land part is wider than the inner intermediate land part, and the outer shoulder land part is wider than the inner shoulder land part. In the outer (inner) intermediate land part, outer (inner) intermediate first lug grooves which communicate with the main grooves on both sides, and outer (inner) intermediate second lug grooves which communicate only with the main groove on the outside (inside) in the tire width direction are alternatingly arranged in the tire circumferential direction.

A tire for an autonomous vehicle includes a pair of sidewalls that extend to a ground-engaging tread. The tread includes a plurality of hexagonally-shaped tread elements, and the tire includes an outer diameter that is at least four times larger than a width of the tread. Selected hexagonally-shaped tread elements may be formed with features to increase traction on icy roads.