It is provided a pneumatic tyre, the tyre having a circumferential direction, an axial direction and an equatorial plane, and the tyre comprising: a tread extending in a tyre circumferential direction, said tread comprising at least one circumferential groove running continuously in the circumferential direction, and a plurality of axial grooves or transverse grooves running at an angle to the axial direction, and a plurality of blocks defined by the circumferential groove and the axial grooves or transverse grooves, said blocks extending radially between an inner surface of the tread and a tread surface to come into contact with the ground, wherein at least some of the blocks comprise at least one wavy groove that extends from a circumferential groove inwardly into the block, and wherein the wavy groove has a depth extending radially from the tread surface to come into contact with the ground towards the inner surface that ends above the inner surface (26) of the tread.

A pneumatic tire is provided with, in the tread surface, land portions that include a plurality of blocks. The land portions are provided with a plurality of narrow shallow grooves and a plurality of recessed portions in a contact patch. The opening area ratio Se′ of the recessed portions in the end portion regions in the tire circumferential direction of one continuous contact patch and the opening area ratio Sc′ of the recessed portions in the central portion region in the tire circumferential direction have the relationship Sc′<Se′, where the central portion region is defined as the region in the central portion in the tire circumferential direction occupying 50% of the continuous contact patch, and the end portion regions are defined as the regions in the front and back end portions in the tire circumferential direction occupying 25%.

A tire includes a tread portion including first to third main grooves continuously extending in a tire circumferential direction. The first main groove has a groove centerline arranged on a side of the inboard tread edge with respect to a tire equator and the groove centerline is located at an axial distance L1 from the tire equator of from 5% to 25% of a tread half width. The second main groove is arranged between the first main groove and the inboard tread edge and has a groove centerline located at an axial distance L2 from the tire equator of from 35% to 65% of the tread half width. The third main groove is arranged between the tire equator and the outboard tread edge and has a groove centerline located at an axial distance L3 from the tire equator of from 25% to 55% of the tread half width.

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.

A tire comprises a tread portion. The tread portion comprises a first tread edge, a shoulder main groove extending continuously in a tire circumferential direction between the first tread edge and a tire equator, and a shoulder land region defined between the first tread edge and the shoulder main groove. The shoulder land region is provided with a shoulder sipe extending in a tire axial direction with a width less than 1.5 mm. The shoulder sipe includes a narrow sipe portion and a wide sipe portion having a width larger than that of the narrow sipe portion. The wide sipe portion is arranged on a side of the shoulder main groove.

A pneumatic vehicle tire with a tread comprising circumferential grooves (2) and at least one profile rib (1), which runs around in the circumferential direction and formed in which there are grooves (4) which at a groove flank (5) of a circumferential groove (2) that delimits the profile rib (1) open into it, wherein the groove flanks (5) of the circumferential groove (2) run at an angle (β) of 12° to 17° to the radial direction, thereby widening the circumferential groove (2) in the direction of the periphery of the tread. The grooves (4) run at an angle (α) of 45°±20° to the axial direction, end within the profile rib (1), have a maximum depth (t.sub.2) of 3.5 mm and open in each case into a local indentation (7), which is formed at the groove flank (5), reaches up to the periphery of the tread, is concavely rounded along the groove flank (5) and has a bottom (7a) that runs in particular parallel to the periphery of the tread and is at a distance (c), determined in the radial direction, of 0.5 mm to 2.0 mm from the deepest point of the groove (6) of the circumferential groove (2).

A pneumatic tire comprises a tread surface of a tread portion comprising land portions defined by three circumferential grooves extending in the tire circumferential direction and main lug grooves forming intra-land portions divided in the tire circumferential direction; the intra-land portions being divided by the laterally outer circumferential grooves, the main lug grooves, and circumferential narrow grooves to form long small land portions, which are long in the tire circumferential direction); and the intra-land portions being divided by the laterally central circumferential groove, the main lug grooves, subsidiary lug grooves, and the circumferential narrow grooves to form two short small land portions, which are short in the tire circumferential direction.

Provided is a pneumatic tire. A tread portion includes a plurality of longitudinal grooves extending in the tire circumferential direction, a plurality of lateral grooves extending in a tire lateral direction, and a plurality of blocks defined by the longitudinal grooves and the lateral grooves. Notch portions are formed in portions of a freely-selected pair of blocks adjacent to each other across a longitudinal groove, the portions facing the longitudinal groove. The notch portions face with each other across the longitudinal groove. Each of the notch portions has a notch width and a notch depth larger on a center side in an extension direction of the longitudinal groove than on an outer side in the extension direction of the longitudinal groove.

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 pneumatic tire includes a tread portion including an inboard tread region between a tire equator and an inboard tread edge, and an outboard tread region between the tire equator and an outboard tread edge. The inboard tread region is provided with a first main groove extending and a second main groove each extending continuously in the tire circumferential direction. The outboard tread region is provided with a plurality of recesses that are not in communication with other grooves. The recesses include a plurality of deep bottom recesses having depths equal to or more than 5 mm. A total of opening areas of the deep bottom recesses on a ground contact surface of the tread portion is equal to or less than 5% of a surface area of the outboard tread region that is obtained by filling up all grooves and recesses provided thereon.