A tire includes a tread portion including first and second tread edges, a first shoulder land portion including the first tread edge, and a first shoulder circumferential groove located inwardly in a tire axial direction of and adjacent to the first shoulder land portion and extending continuously in a tire circumferential direction. The first shoulder land portion is provided with a plurality of first shoulder lateral grooves extending from the first shoulder circumferential groove across the first tread edge, each of the plurality of first shoulder lateral grooves has a pair of first groove walls, and the pair of first groove walls is provided with a pair of first chamfer portions that extends from the first shoulder circumferential groove to a first location beyond the first tread edge.

A tire has a tread portion comprising: a crown land zone provided with a crown auxiliary groove and crown lateral grooves; and a shoulder land zone provided with a shoulder auxiliary groove and shoulder lateral grooves. The axial width of the shoulder land zone is larger than the axial width of the crown land zone. The groove widths of the crown auxiliary groove and the shoulder auxiliary groove are smaller than that of a shoulder main groove. The lateral crown groove comprises a radially outer wide portion and a radially inner narrow sipe-like portion.

A tyre has a tread portion having a tread ground contacting surface and a main groove having a bottom surface and two groove wall surfaces extending outwardly in a tyre radial direction from the bottom surface. In a lateral cross section perpendicular to a length direction, at least one groove wall surface has an inner groove wall portion connected with the bottom surface and a protruding portion connected with the inner groove wall portion and having a protruding end protruding inwardly in a groove width direction from a groove reference line obtained by extending the inner groove wall portion. The protruding portion has an inclined surface portion extends obliquely between the protruding end and the tread ground contacting surface. When the tread portion in a reference state is loaded with a tyre load of 1.20 times a standard tyre load, the whole inclined surface portion contacts a flat surface.

A pneumatic tire includes circumferential grooves aligned in a lateral direction and extending in a circumferential direction, lateral grooves aligned in the circumferential direction and extending to cross the circumferential direction, communicating at ends with the circumferential grooves and defining a block-shaped land portion between the circumferential grooves, two narrow grooves aligned in the lateral direction and extending in the circumferential direction, communicating at ends with a lateral groove and dividing the land portion defined by each of the circumferential grooves and each of the lateral grooves into small land portions, the narrow grooves having a smaller groove width than the circumferential grooves and being formed with a bent portion in an intermediate portion, the bent portion being disposed inward in the lateral direction, and bend points of the bent portions being disposed at positions offset from one another in the circumferential direction.

A tyre includes a tread portion being provided with a longitudinal groove and a land portion being adjacent to the longitudinal groove. The land portion has a ground contact surface defined between a first circumferential edge located on the longitudinal groove side and a second circumferential edge located on an opposite side to the first circumferential edge. The land portion is provided with first lateral grooves and sipes. The first lateral grooves extend from the first circumferential edge and having inner ends thereof terminating within the land portion. The first lateral grooves are provided with tie-bars on the respective inner ends side, the tie-bars having lengths smaller than lengths of the respective first lateral grooves. The sipes include first sipe elements extending form the second circumferential edge to the respective first lateral grooves and second sipe elements extending on the respective tie-bars.

Tread (1) for a heavy-duty vehicle tire having, when new, a tread surface (10), with at least one evolving cut (2) comprising a part (22) hidden inside the tread which is delimited by opposing walls (221, 222) distant from one another by a maximum width Lc. The part (22) being extended towards the tread surface (10) by a sipe (21), opening into the hidden part (22) to be offset from one of the walls (221, 222) delimiting the hidden part to form a bridge situated radially over said hidden part (22). The tread having a plurality of grooves (4) open when new onto the tread surface (10), these grooves (4) opening into an evolving cut (2) to form a connecting region (41), the tread (1) further comprising, in at least 50% of the connecting regions (41, 42), a protuberance (5) extending over the entire height Hc of the hidden part (22) and over a maximum thickness Ep so as to act as a support for the bridge (211) situated radially over the hidden part (22) in the connecting region (41).

A tyre includes a tread portion provided with circumferentially extending main grooves and land portions. The main grooves include an outboard crown main groove, and an inboard crown main groove. The land portions include a crown land portion defined between the outboard crown main groove and the inboard crown main groove. The crown land portion is provided with first crown sipes having first ends connected to the outboard crown main groove and second ends terminating within the crown land portion, and second crown sipes having first ends connected to the inboard crown main groove and second ends terminating within the crown land portion, wherein the first crown sipes are inclined with respect to a tyre axial direction in a same direction as the second crown sipes, and the first crown sipes and the second crown sipes are different in angle with respect to the tyre axial direction.

A pneumatic tire includes at least four circumferential main grooves extending in a tire circumferential direction and at least five land portions defined by the at least four circumferential main grooves. A center land portion includes a plurality of center lug grooves extending through the center land portion in a tire lateral direction and disposed at predetermined intervals in the tire circumferential direction, and a plurality of center blocks that are defined by the plurality of center lug grooves. The center blocks each include a narrow shallow groove that extends through the center block in the tire lateral direction and that remains open when the tire comes into contact with the ground.

A tire includes a tread portion with a designated install direction to a vehicle to have an inboard tread edge and an outboard tread edge. The tread portion is provided with a circumferentially extending inboard shoulder main groove to form an inboard shoulder land portion and a circumferentially extending outboard shoulder main groove with a width smaller than a width of the inboard shoulder main groove to form an outboard shoulder land portion. The inboard shoulder land portion is provided with inboard shoulder lug grooves extending inwardly in a tire axial direction from at least the inboard tread edge and terminated within the inboard shoulder land portion. The outboard shoulder land portion is provided with outboard shoulder lug grooves extending inwardly in the tire axial direction from at least the outboard tread edge to the outboard shoulder main groove.

The tire has a tread portion 2 comprising a plurality of main grooves and a first land portion 11 divided by the main grooves. The first land portion 11 comprises a plurality of first blocks 15 divided by first lateral grooves 14. The first lateral groove 14 is provided with a first tie bar 19 raising from a part of the groove bottom excluding its end portions in the tire axial direction. The first block 15 is provided with a first sipe 20 inclined with respect to the tire axial direction to the same orientation over its entire length from a first longitudinal edge 26 to a second longitudinal edges 27 of the block. The first sipe 20 is composed of a first portion 21 extending from the first longitudinal edge 26, a second portion 22 extending from the second longitudinal edge 27, and a third portion 23 between the first portion 21 and the second portion 22. The angle with respect to the tire axial direction of the third portion 23 is greater than the angles with respect to the tire axial direction of the first portion 21 and the second portion 22.