A tire for a vehicle wheel includes a tread band. The tread band includes a pattern, including at least two circumferential portions, an elongated ridge, and at least two shoulder blocks. The at least two circumferential portions are disposed in axial side-by-side relationship. At least one of the circumferential portions includes a first geometric module repeated along a circumferential extension direction of the tire. The elongated ridge is bounded by two grooves oblique to the circumferential extension direction and is divided into a plurality of intermediate blocks with respect to an axial extension direction of the tread band. The intermediate blocks are bounded by a plurality of cuts substantially transverse to the elongated ridge. The at least two shoulder blocks are associated with the elongated ridge, are circumferentially aligned along a side edge of the tread band, and are bounded by grooves oriented substantially transversely to the circumferential extension direction.

A pneumatic tire has paired bead portions, paired sidewall portions, a tread portion, a plurality of lug grooves extending from a shoulder area of the tread portion to reach a buttress area of the sidewall portion, and a block defined by the plurality of lug grooves. The block includes a shoulder block provided in the shoulder area, and a buttress block provided in the buttress area. The buttress area is provided with an annular rib annularly extending along a tire circumferential direction. The lug grooves are comparted into an outside lug groove positioned in an outer side of the annular rib, and an inside lug groove positioned in an inner side of the annular rib. A widened portion is provided in at least part of the plurality of lug grooves so as to enlarge a width of the annular rib.

A pneumatic tire (10) has, in the surface of the tread (11), a central circumferential groove (12) located at the center of the contact patch width and extending circumferentially around the tire, a plurality of longitudinal grooves (13 (13a, 13b)) formed on the axially outside of the central circumferential groove (12), lug grooves (15), and blocks (16 (16a to 16c)) defined by the central circumferential groove (12), the longitudinal grooves (13), and the lug grooves (15). Each of the lug grooves (15) is formed such that its width in the shoulder region is greater than its width in the central region, and the sum of the groove area of the central circumferential groove (12) and the groove area of the longitudinal grooves (13) is smaller than the area of the lug grooves (15). As a result, the pneumatic tire (10) not only secures the wet braking performance and wear resistance performance on paved roads, but also improves the acceleration performance and braking performance and the steering stability performance on snowy roads.

A tire includes an annular tread portion with a circumferentially extending groove having bridge structures at circumferential intervals about the groove and contoured pockets therebetween. Each pocket has curved transition surfaces separating the bridge structures from curved base surfaces of the pocket. The curved transition surfaces have radii of curvature between 2.0 mm and 4.0 mm. The curved base surfaces may radii of curvature between 4.0 mm and 8.0 mm.

A tire includes an annular tread portion including a first circumferentially extending asymmetric shoulder groove having an angled axially inner sidewall with an axially inner sidewall radial angle between 170° and 180°, an angled axially outer sidewall with an axially outer sidewall radial angle between 155° and 170°, and a curved base surface with a radius of curvature ranging from 40.0 mm at an axially inner edge and 20.0 mm at an axially outer edge.

The pneumatic tire has main grooves; land portions which are sectioned by the main grooves; paired notches which face to each other as well as being open to a tread surface; the notches being concave portions which are formed in side surfaces of two land portions which are adjacent across the main grooves; tie bars which protrudes at a predetermined height from groove bottoms of the main grooves and connect between the paired notches; and dimples which are provided in the middle in a width direction of the tie bars. The dimples are arranged at least in a notch internal region which is surrounded by wall surfaces of the notches among the tie bars.

A pneumatic tire comprises a tread portion provided on each side of the tire equator with a middle land portion defined between a shoulder main groove and a crown main groove each extending continuously in the tire circumferential direction. The middle land portion is provided with axially inside middle lug grooves and axially outside middle lug grooves arranged alternately in the tire circumferential direction. The axially inside middle lug groove is connected to the crown main groove at an angle θ1 of from 20 to 45 degrees with respect to the tire circumferential direction and has an axially inner opened end and an axially outer closed end. The outside middle lug grooves is connected to the shoulder main groove at an angle θ2 of from 60 to 80 degrees with respect to the tire circumferential direction and has an axially outer open end and an axially inner closed end. The tread portion may be provided with a shoulder land portion comprising circumferential sipes, axial grooves terminating at the circumferential sipes, and a circumferentially continuous rib.

An object is to, in an aircraft tire, promote heat dissipation from circumferential direction grooves of a tread and improve durability of the tire. Plural circumferential direction grooves (central side circumferential direction grooves (14), edge portion side circumferential direction grooves (16)) that extend in a tire circumferential direction are formed in a tread (12). In a tire circumferential direction cross-section, a groove bottom (18) of at least one of the circumferential direction grooves has a wave shape having amplitude in a tire radial direction.

A pneumatic tire has a tread portion 2 provided with: an outboard shoulder main groove 4 and an outboard crown main groove 6 extending circumferentially of the tire; first outboard shoulder axial grooves 12a extending from an outboard tread edge Teo to the outboard shoulder main groove 4; second outboard shoulder axial grooves 12b extending from the outboard tread edge Teo and terminating without reaching to the outboard shoulder main groove 4; first outboard middle axial grooves 16 extending from the outboard shoulder main groove 4 and terminating without reaching to the outboard crown main groove 6; and second outboard middle axial groove 22 extending from the outboard crown main groove 6 and terminating without reaching to the outboard shoulder main groove 4. The first outboard middle axial grooves 16 are aligned with the first outboard shoulder axial grooves 12a, respectively, so as to smoothly continue to the first outboard shoulder axial grooves 12a through the outboard shoulder main groove 4.

An off-road pneumatic tire has a tread having an outer surface forming a tread surface, the tread including a body and multiple blocks projecting from the body substantially outward in radial direction. The blocks have a center block group, a pair of shoulder block groups and a pair of middle block groups. The center group includes center blocks at interval in circumferential direction on plane of equator. Each shoulder group includes shoulder blocks at interval in the circumferential direction on an edge of the tread surface. Each middle group includes middle blocks at interval in the circumferential direction between the center and one shoulder groups. The center group has units each having first, second, third and fourth center blocks in the order of the first, second, third and fourth blocks in the circumferential direction.