A tyre 1 for a motorcycle comprises a tread portion 2 and a pair of sidewall portions 3 connected with both ends of the tread portion 2 and extending inwardly in a tyre radial direction. A connecting portion 9 of the tread portion 2 and at least one of the pair of the sidewall portions 3 is provided with a plurality of protruding portions 10 each protruding outwardly in a tyre axial direction. The plurality of the protruding portions 10 is arranged in a tyre circumferential direction with a space 11 between each other.

A tire is a tire in which circumferential grooves, and lug grooves comprising opening portion in tread end and which extend in the tread width direction from the tread end to the circumferential groove, are formed. Projection parts are provided in the groove bottom of the circumferential grooves. The projection parts extend from one side wall forming a circumferential groove to the other side wall opposite the one side wall. Multiple lug grooves are formed at predetermined intervals in the circumferential direction. In the tread surface view of the tire, given points of intersection as the points at which a circumferential groove extension that passes through a circumferential groove intersects with a lug groove extension that passes through a lug groove, the projection parts are provided between a first point of intersection and a second point of intersection adjacent to the first point of intersection in the circumferential direction.

The invention is directed to a pneumatic vehicle tire having a tread with profile positives which are separated from one another in a circumferential direction by transverse channels which extend continuously from the central region of the tread to the lateral tread edges and which are main channels of the tread and which, at least over the major part of the course thereof, have the maximum provided profile depth. The tread has, as profile positives, two rows of transverse ribs which are of encircling form in the circumferential direction and which are separated from one another by respective transverse channels. The tread is of directional configuration, wherein the transverse ribs of one row, and thus the transverse channels running between the transverse ribs, run, with respect to the axial direction, oppositely in relation to the transverse ribs and transverse channels of the other row.

A pneumatic tire includes a tread portion with shoulder lug grooves spaced apart in a circumferential direction, each extending outward in a tire lateral direction, opening to a ground contact end, and including a closed end inward in the tire lateral direction. In a region of each of the shoulder lug grooves from an end of a belt having a greatest width in a belt portion of the pneumatic tire to an inner side in the tire lateral direction, the shoulder lug groove has a groove width that decreases inward in the tire lateral direction, and includes a portion where a groove cross-sectional area is kept constant by a change in at least one of a groove wall angle or a groove depth of the shoulder lug groove, the portion being provided in the tire lateral direction across a length of at least 20% of half a tire development width.

A pneumatic vehicle tire including a utility vehicle tire has a tread with profile positives which are separated from one another in a circumferential direction by transverse channels which extend continuously from the central region of the tread as far as the lateral tread edges, respectively. The transverse channels are main channels of the tread and, at least over the major part of the course thereof, have the maximum provided profile depth. The transverse channels are provided, on the respective channel base thereof, with a row of base elevations formed so as to be distributed over the entire course of the transverse channels. The base elevations are attached to the channel flanks of the transverse channels and are configured such that their rubber volume becomes smaller the closer to the tread edge they are disposed.

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 that includes a center main groove, an outer main groove provided on an outer side in a tire width direction of the center main groove, and a lug groove extending in a direction intersecting with both main grooves. The center main groove has a zigzag shape in which a first linear portion and a second linear portion are alternately connected. The outer main groove has a zigzag shape in which a long linear portion and a short linear portion are alternately connected. The lug groove has a groove center line intersecting with the short linear portion in the zigzag shape of the outer main groove.

A non directional pneumatic tire is provided for an agricultural irrigation system. The tire includes first and second side walls and a radially outer wall defining an internal inflation chamber. A non directional tread pattern is defined on the tire and includes a plurality of longitudinal protrusions positioned substantially parallel to a rotational axis of the tire. The longitudinal protrusions are arranged in first and second rows extending from the first and second side walls toward and across the equatorial plane of the tire. The longitudinal protrusions of the first and second rows circumferentially alternate with each other and there is a circumferential spacing between adjacent longitudinal protrusions at the equatorial plane so that no portion of one longitudinal protrusion circumferentially coincides with or overlaps another.

A pneumatic tire includes: a center lug groove extending in a lateral direction in a center land portion, the center lug groove connecting to two main groves at both ends; an outer middle lug groove extending in the lateral direction in an outer middle land portion, the outer middle lug groove connecting to two main groves at both ends; and an inner middle lug groove extending in the lateral direction in an inner middle land portion, the inner middle lug groove including an end connecting to the main groove of the two main grooves located inward in the lateral direction and the other end terminating within the inner middle land portion; and the center lug groove and the outer middle lug groove each including a central region in a length direction including a sipe portion, the sipe portion including a sipe with a chamfered opening portion.

A tire having a tread portion with: zigzag shoulder main grooves having a trapezoidal wave form comprising first and second circumferential segments and first and second oblique segments; and shoulder axial grooves extending from the shoulder main grooves beyond the tread edges. The shoulder axial grooves are respectively smoothly continued to the first oblique segments or the second oblique segments so as to form composite shoulder axial grooves whose groove widths are smoothly increased toward the axially outside of the tire.