In a tire having composite grooves provided on a shoulder land portion, dry performance and wet performance are improved. The tire includes a tread portion 2. The tread portion 2 includes a first shoulder land portion 13. The first shoulder land portion 13 has shoulder lateral grooves 15 and shoulder composite grooves 20. The shoulder lateral grooves 15 and the shoulder composite grooves 20 are each curved so as to be convex in a tire circumferential direction. Each shoulder composite groove 20 includes, in a cross section thereof, a sipe element 21 having a width not greater than 1.5 mm and extending from a tread surface of the first shoulder land portion 13 in a tire radial direction, and a groove element 22 connected to an inner side in the tire radial direction of the sipe element 21 and having a width greater than 1.5 mm.

A tire has a tread portion 2 including a first land portion 11. The first land portion 11 includes a first circumferential edge 11a, a second circumferential edge 11b, and a tread surface between the first circumferential edge 11a and the second circumferential edge 11b. On the tread surface, a first inclined groove 21 extending from the second circumferential edge 11b to the first circumferential edge 11a side, a second inclined groove 22 extending from the second circumferential edge 11b to the first circumferential edge 11a side so as to be inclined in a direction opposite to that of the first inclined groove 21, and a triangular block 35 demarcated by the first inclined groove 21 and the second inclined groove 22, are formed. A curved groove 15 curved so as to be convex on the second circumferential edge 11b is formed on the triangular block 35.

A tire tread includes a plurality of circumferential grooves, each of the plurality extending continuously in a tire circumferential direction. The plurality of circumferential grooves define a circumferentially extending shoulder rib. The shoulder rib has a plurality of shoulder elements. Each shoulder element is defined by two lateral shoulder grooves. Each shoulder element has an axially outer shoulder element and a corresponding axially adjacent and axially inner shoulder element separated by a circumferential groove. The axially outer shoulder elements each have a pair of angled outer lateral S-shaped blind grooves extending axially away from the inner shoulder elements.

A tire for vehicle wheels comprises a tread band (2), on which a first circumferential rib (14) is formed, on which a plurality of first notches (20) are formed, which extend as a whole over at least 80% of the width of the first circumferential rib and each of which comprises: ⋅ i. a first portion (21) which is substantially rectilinear and has a first inclination with respect to a circumferential direction, ⋅ ii. a second portion (22) which is substantially rectilinear and has a second inclination with respect to the circumferential direction having a sign opposite to said first inclination, and ⋅ iii. a connecting portion (23) that extends between said first portion and said second portion; respective pluralities of the second and the third notches (30; 40), which are blind and substantially parallel to the first (21) and the second portion (22), respectively, of said first notches (20), are further formed on the first circumferential rib (14).

A lug groove and a sipe formed in an outside shoulder land portion are inclined in a first predetermined direction, a lug groove and a sipe formed in an outside second land portion are inclined in a second predetermined direction. A lug groove formed in a center land portion is inclined in the second predetermined direction, a sipe formed in the center land portion is inclined in the first predetermined direction. A lug groove formed in an inside second land portion is inclined in a first predetermined direction, a sipe formed in the inside second land portion is inclined in a second predetermined direction. A lug groove and a sipe formed in an inside shoulder land portion are inclined in a first predetermined direction, the lug groove formed in the inside second land portion and the lug groove formed in the inside shoulder land portion are formed by offsetting.

A tire includes a tread portion including a pair of shoulder main grooves and a crown region defined between the pair of the shoulder main grooves. The crown region includes a plurality of crown blocks. A ground contacting surface of at least one of the crown blocks is provided with a first sipe, a second sipe, and a third sipe. The first sipe, the second sipe, and the third sipe are connected with each other at one intersection.

On a tread of tire, an inclined width direction groove, a plurality of zigzag sipes, an inclined width direction groove and a plurality of zigzag sipes are repeatedly formed in the tire circumferential direction. The inclined width direction groove communicates with the circumferential direction groove, one end of the sipe portion communicates with the narrow groove portion, and the other end of the sipe portion terminates in the rib-like block without communicating with the circumferential direction groove. The inclined width direction groove communicates with the circumferential direction groove, one end of the sipe portion communicates with the narrow groove portion, and the other end of the sipe portion terminates in the rib-like block without communicating with the circumferential direction groove.

A tread portion includes a groove having first and second groove walls opposing each other, at least one first recess formed by partially recessing the first groove wall, and at least one second recess formed by partially recessing the second groove wall. A depth of each of the first and second recess from a ground contact surface is less than a groove depth of the groove. The first recess includes a first opening disposed at the first groove wall, and a first end portion extending substantially parallel to the first opening at a position farthest from the first opening. The second recess includes a second opening disposed at the second groove wall, and a second end portion extending substantially parallel to the second opening at a position farthest from the second opening. The first and second end portions are disposed so as not to oppose each other through the groove.

Provided is a pneumatic tire including a plurality of main grooves extending in a tire circumferential direction and land portions defined by the main grooves adjacent to each other, respectively. The land portions are ribs that are continuous in the tire circumferential direction, and include lug grooves having a semi-closed structure, respectively. Of the main grooves defining the land portions, at least one of the main grooves has a zigzag shape formed by alternately connecting long portions and short portions. Further, a circumferential length Lg2 of the long portion has a relationship 0.70≤Lg2/λ2≤0.90 with respect to a wavelength λ2 of the zigzag shape.

A tire can include a tread, sidewalls, beads, and a carcass. Each bead can include a core and an apex. A ratio of a height of the apex to a cross-sectional height of the tire may be not less than 5% and not greater than 15%. In a meridian cross-section of the tire in a standard state, a contour of a side surface including a maximum width position can include two arcs tangent to each other at the maximum width position. The arc located inward of the maximum width position in a radial direction can be a first arc, and the arc located outward of the maximum width position in the radial direction can be a second arc. A ratio of a first radius of the first arc to a second radius of the second arc may be not less than 70% and not greater than 91%.