A pneumatic tire comprising on a tread surface 1 a plurality of blocks 7, wherein: the blocks have an inclined groove 43 formed thereon; the inclined groove has a connecting portion 43a connected to the circumferential main grooves, a wide-width portion 43b connected to the connecting portion, and a narrow-width portion 43c connected to the wide-width portion; the wide-width portion and the narrow-width portion have inclination angles with respect to the tire circumferential direction smaller than the connecting portion; the blocks have a sipe 52a formed thereon, the sipe having one end opening to the connecting portion and the other end opening to the circumferential main grooves; and the sipe has a bent portion.

In a pneumatic tire, a groove opening portion of an inner side shoulder main groove and a groove opening portion of an inner side center main groove have edge portions with a straight shape. A groove opening portion of an outer side center main groove has an edge portion chamfered in a zigzag shape. A groove width Wg1 of the inner side shoulder main groove, a groove width Wg2 of the inner side center main groove, and a groove width Wg3 of the outer side center main groove have a relationship Wg1<Wg3 and Wg2<Wg3.

A pneumatic tire includes a mounting direction indicator, an inner shoulder and center main grooves, inner shoulder and second lands, and a center land. The inner shoulder and center main grooves are formed inward in a vehicle width direction and extend in a circumferential direction. The inner shoulder and second lands and the center land are defined by the inner shoulder and center main grooves. The inner shoulder land includes a circumferential narrow groove, an inner shoulder lug groove, and an inner shoulder sipe. The circumferential narrow groove extends in the circumferential direction. The inner shoulder lug groove extends from a ground contact edge in a lateral direction, intersects with the circumferential narrow groove, and terminates in the inner shoulder land. The inner shoulder sipe extends from the inner shoulder main groove in the lateral direction, intersects with the circumferential narrow groove, and terminates in the inner shoulder land.

A pneumatic tire comprises a tread portion 2 provided with a circumferential land region 6 provided with a plurality of combined sipes 35 (36, 37). The combined sipes 35 (36, 37) are each composed of a straight portion 34 extending from one edge toward the other edge of the circumferential land region 6, and an arc-shaped portion 33 extending from the straight portion 34 to the other edge of the circumferential land region 6. The combined sipes 35 include a first combined sipe 36 in which the maximum depth of its arc-shaped portion 33 is larger than the maximum depth of its straight portion 34, and a second combined sipe 37 in which the maximum depth of its straight portion 34 is larger than the maximum depth of its arc-shaped portion 33.

It is a tyre 1 provided in a tread portion 2 with blocks 3 having ground contacting surfaces (3a). At least one of the blocks 3 is provided with a chamfered portion 7 formed in such a manner that a corner portion (3k), where a vertical wall surface (3b), a lateral wall surface (3c), and the ground contacting surface (3a) intersect with each other, is cut out obliquely, and a chamfer edge 8 where the chamfered portion 7 and the ground contacting surface (3a) intersect. The chamfered portion 7 is provided with a plurality of first concave portions 9 extending inwardly in a tyre radial direction from the ground contacting surface (3a). The first concave portions 9 have wavy shapes having amplitudes in a longitudinal direction of the chamfer edge 8.

The pneumatic tire of this disclosure comprises on a tread surface one or more land portions, wherein the land portions is formed into a protruding shape such that its tire radial outline in a tire widthwise cross section protrudes to a tire radial outer side, the outline includes, in the tire widthwise cross section, at least a first arcuate surface having a radius of curvature of a tire widthwise center of the land portion, and second arcuate surfaces having radiuses of curvature smaller than the first arcuate surface and located on both tire widthwise edges of the land portion, sipes extending in the tire width direction are formed on the land portions formed into the protruding shape, the sipes have chamfer portions, and the chamfer portions have chamfer widths on at least one of both tire widthwise edges larger than chamfer widths on the tire widthwise center.

This pneumatic tire includes, on the tread surface, land portions defined by circumferential main grooves extending continuously in the tread circumferential direction and by tread edges. An intermediate land portion on one side in the tread width direction, adjacent to the tire equatorial plane side of the outermost circumferential main groove on the one side, is formed into blocks only by sipes extending in the tread width direction, an intermediate land portion on the other side in the tread width direction, adjacent to a tire equatorial plane side of an outermost circumferential main groove on the other side, is formed in a ribbed shape, and intermediate land portion lug grooves are formed in the intermediate land portion on the other side, with one end opening into the outermost circumferential main groove on the other side, and the other end terminating within the intermediate land portion on the other side.

A tire includes a tread portion. The tread portion has a main groove extending continuously in a tire circumferential direction, and a land portion adjacent to the main groove. The land portion has lateral grooves extending from the main groove in a tire axial direction. Each of the lateral grooves has a first portion communicating with the main groove, and a second portion connected to the first portion. The first portion has a larger groove width than the second portion and has a smaller groove depth than the second portion.

A block segment sections and outer rib-shaped sections are arranged in an outer shoulder land section. An end portion of one of vertical groove sections in one of L-shaped groove sections, which is at the other side in the tire circumferential direction communicates with one of the horizontal groove sections in another L-shaped groove section of the L-shaped groove sections, which is adjacent to the L-shaped groove section in the tire circumferential direction, via one of second communicating sections. In addition, positions of first communicating sections and the second communicating section in the tire width direction are different from each other.

A tire comprises center blocks 4 comprising a first center lateral groove 5A and a second center closed sipe 6a opposed to each other in a tire axial direction, and a second center lateral groove 5B and a first center closed sipe 6b axially opposed to each other. Lengths thereof satisfy the followings: LA/LA0, LB/LB0, Lb/Lb0 in a range of from to , La/La0 in a range of from to , LA<La, (LA+La)<LA0, LB<Lb, and (LB+Lb)<LB0. The center blocks 4 comprise a high rigidity region extending continuously between penetrating sipes 3 and between a first imaginary line passing through terminating ends of the first center lateral groove and the first center closed sipe and a second imaginary line passing through terminating ends of the second center lateral groove and the second center closed sipe.