A pneumatic tire comprises a tread portion 2 provided with a circumferential land region 6 provided with a plurality of combined sipes 35 (36, 37). The combined sipes 35 (36, 37) are each composed of a straight portion 34 extending from one edge toward the other edge of the circumferential land region 6, and an arc-shaped portion 33 extending from the straight portion 34 to the other edge of the circumferential land region 6. The combined sipes 35 include a first combined sipe 36 in which the maximum depth of its arc-shaped portion 33 is larger than the maximum depth of its straight portion 34, and a second combined sipe 37 in which the maximum depth of its straight portion 34 is larger than the maximum depth of its arc-shaped portion 33.

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.

Provided is a tire comprising, a shoulder land portion includes a width direction groove, the width direction groove comprises a first width direction groove portion that communicates with the circumferential groove, and a second width direction groove portion adjacent to and continuous with a tread ground contact edge side of the first width direction groove portion, the first width direction groove portion includes a narrowed groove portion in a region of at least a part of the first width direction groove portion in an extending direction of the first width direction groove portion, and respective groove widths of the circumferential groove, the first width direction groove portion and the second width direction groove portion satisfy a relational expression the groove width of the circumferential groove>the groove width of the first width direction groove portion>the groove width of the second width direction groove portion.

In the pneumatic tire according to this disclosure, a plurality of sipes on a tread surface include a large intermediate width sipe 4 having: a pair of intermediate sipe wall surface portions 61, a pair of bottom-side sipe wall surface portions 62 and a pair of tread-surface-side sipe wall surface portions 63; and within a central region of the tread surface, a spacing along a tire circumferential direction between the large intermediate width sipe and another sipe or groove is 2.0 to 4.0 times of a sipe depth D of the large intermediate width sipe.

A tyre includes a crown land portion, an outboard middle land portion, an outboard shoulder land portion, an outboard crown circumferential groove, an outboard shoulder circumferential groove, an inboard middle land portion, an inboard shoulder land portion, an inboard crown circumferential groove, and an inboard shoulder circumferential groove. The outboard middle land portion is provided with full-opened outboard middle sipe that are inclined to a tyre axial direction. The outboard middle sipes each have two opposite sipe-edge portions provided with chamfer portions. In each chamfer portion of each outboard middle sipe, chamfer widths at both ends of the outboard middle sipe are larger than a chamfer width of a central portion of the outboard middle sipe. The outboard shoulder land portion is provided with outboard shoulder sipes that are inclined in the same direction as the outboard middle sipes to the tyre axial direction.

A pneumatic tire is provided in which main sipes 20 are formed on land sections of a tread and at least one of ends in an extending direction of each main sipe is a blocked end 21 that is blocked in the land section, auxiliary sipes 23 separated from the main sipe are formed on both sides of the blocked end, the blocked end overlaps with the auxiliary sipes on both sides thereof in a direction orthogonal to the extending direction of the main sipe, a distance between a center in an extending direction of the auxiliary sipe and the blocked end is 10% or more to 20% or less of a depth of the main sipe, the extending direction of the auxiliary sipes is inclined with respect to the extending direction of the main sipe, and the auxiliary sipes are gradually shortened as coming toward a depth direction.

To provide a pneumatic tire in which sipes 20 are formed in a land section of a tread, at least one of end parts in an extending direction of each sipe 20 is an end part 21 in the land section that is blocked in the land section, and holes 22 continue from the end parts 21 in the land section with a circular shape or an elliptical shape in plan view are formed, in which a portion from an opening end 23 to a bottom part 24 of the hole 22 continues from the end part 21 in the land section, and a diameter of the hole 22 is reduced as coming toward a deeper position.

A tire having a tread portion. The tread portion includes a first shoulder land portion that is defined between a first shoulder main groove and a first tread end. The first shoulder land portion includes: a shoulder lateral groove that extends from the first tread end and ends in the first shoulder land portion; a first sipe that extends from an end of the shoulder lateral groove to the first shoulder main groove; and a second sipe that extends from the first tread end toward the first shoulder main groove, and ends in the first shoulder land portion. A length of the shoulder lateral groove in a tire axial direction is 0.10 to 0.30 times a width of the first shoulder land portion in the tire axial direction.

A pneumatic tire includes, in a tread portion, main grooves extending in a circumferential direction; ribs defined by the main grooves; at least one rib comprising sipes extending in a lateral direction; the sipes comprising a chamfered sipe with a chamfer portion provided on at least one edge, and a non-chamfered sipe with no chamfer portion provided on an edge; the chamfered sipe comprising one end portion terminating in the at least one rib and another end portion communicating with one of the main grooves located on either side of the at least one rib; a plurality of the chamfered sipes communicating with one of the main grooves located on either side of the at least one rib being alternately disposed in the circumferential direction; and the non-chamfered sipe being disposed close to the chamfered sipe on at least one side in the circumferential direction.

A tyre comprises a tread portion having a land region including a ground contacting surface defined between a first vertical edge and a second vertical edge and a lateral groove including a first portion extending from the first vertical edge, a second portion extending from the second vertical edge, and a connection portion connecting therebetween. The connection portion is a portion between a first small edge protruding circumferentially from the first portion and a second small edge protruding toward a circumferentially opposite side to the first small edge. A length in the tyre circumferential direction of each of the first and second small edges is smaller than a maximum groove width of each of the first and second portions. At least a part of the connection portion has a raised bottom portion having a depth smaller than that of the lateral groove at the first and second vertical edges.