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 tire includes a tread portion. The tread portion has a main groove extending continuously in a tire circumferential direction, and a land portion adjacent to the main groove. The land portion has lateral grooves extending from the main groove in a tire axial direction. Each of the lateral grooves has a first portion communicating with the main groove, and a second portion connected to the first portion. The first portion has a larger groove width than the second portion and has a smaller groove depth than the second portion.

A tire 1 comprises a tread portion 2 provided with an outboard shoulder land region 8 with outboard shoulder sipes 26. The outboard shoulder sipe 26 comprises a deep bottom part 27 and a shallow bottom part 28. The shallow bottom part 28 comprises an axially outer part 30 extending axially inwardly from the axially inner end 27i of the deep bottom part 27, an axially inner part 31 extending axially outwardly from the outboard shoulder main groove 4, and a middle part 32 connecting therebetween. The axially outer part 30, axially inner part 31 and middle part 32 have different angles with respect to the tire axial direction.

A sipe includes a first widened and a second widened portion. In a cross section orthogonal to the sipe extending direction, the sipe includes at least one bent portion, at least one bent portion has a widened portion where the width of sipe portions sandwiching the bent portion is increased, and at least one widened portion has a straight line portion, in which an angle formed with a line segment orthogonal to the normal line at the opening center of the sipe on the tread surface is 30 or more, in a wall surface on the major angle side of the bent portion of wall surfaces defining the widened portion.

Provided is a pneumatic tire including a tread portion, sidewall portions, and bead portions. The tread portion comprises a center main groove extending in the tire circumferential direction and a shoulder main groove located outward of the center main groove and extending in the tire circumferential direction. A land portion is defined between the center main groove and the shoulder main groove. The center main groove has a zigzag shape in the tire circumferential direction. Lug grooves extending inward from the shoulder main groove in the tire lateral direction and terminating without communicating with the center main groove are provided in the land portion. A bent portion bent toward a first side in the tire circumferential direction is formed at a terminating end of each of the lug grooves. Narrow grooves extending discontinuously in the tire circumferential direction without communicating with the bent portions are formed in the land 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 tire includes sipes, on a surface of a tread of the tire, extending towards the direction of tire rotation from the tread edge side to the tire equator side of the surface of the tread. The sipes are disposed at intervals in the circumferential direction of the tread. In each of the sipes disposed at the tread edge side, a plane that follows the shape of the opening of the sipe and extends in the tire radial direction from the opening is defined as a reference plane, and each of the sipes disposed at the tread edge side is formed to include an extending portion that extends along the reference plane in the tire radial direction from the opening and a protruding portion that protrudes from the reference plane towards the direction of tire rotation and returns to the reference plane via a bend.

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.