A shoulder land portion includes a main body land portion formed between a thin groove extending in a tire circumferential direction on a tire width direction inner side of a ground contact end and a shoulder main groove, and the main body land portion includes a contact region adjacent to the shoulder main groove provided along the tire circumferential direction and a non-contact region provided along the tire circumferential direction between the thin groove and the contact region. The contact region contacts a road surface in a normal load state, and the non-contact region is recessed to a tire radial direction inner side from a tread surface. The non-contact region does not contact the road surface in the normal road state, and when a length of the non-contact region is W1 and a length of the main body land portion both along the tire width direction is Rw, 0.2Rw≤W1≤0.5Rw.

A rib-like land section partitioned by main grooves, a plurality of sub-grooves provided in the rib-like land section at intervals in the tire circumferential direction and a groove hole provided between the sub-grooves adjacent to each other and extending in the tire circumferential direction are provided in a tread section. The sub-groove includes a lateral groove portion, in which one end opens to the main groove and the other end terminates inside the rib-like land section, and a longitudinal groove portion extending from the other end of the lateral groove portion to one side in the tire circumferential direction and terminating inside the rib-like land section. The groove hole is formed so that a groove depth at one end part close to a terminal end of the longitudinal groove portion becomes shallower than a groove depth at the other end part far from the terminal end.

A tyre comprises a tread portion comprising a first tread edge and a second tread edge, and the tread portion is provided with a plurality of oblique grooves. The plurality of the oblique grooves includes a first oblique groove and a second oblique groove. Each of the first oblique grooves and the second oblique grooves has an open end and a terminating end, and a first steeply-inclined portion positioned on a side of the open end, a second steeply-inclined portion positioned on a side of the terminating end, and a mildly-inclined portion positioned between them. The second steeply-inclined portion includes a part in which an angle thereof with respect to a tyre circumferential direction is gradually decreased as it goes toward the terminating end.

Provided is a pneumatic tire. At least one land portion is defined and formed by a plurality of circumferential main grooves provided in a tread surface. A main sipe including a body portion and a chamfered portion is formed in at least one side of the body portion. A branch sipe branching from the chamfered portion is provided. The depth of the body portion is equal to or greater than the depth of the branch sipe.

A tire 1 comprises a tread portion 2 whose position when mounted on a vehicle is specified. The tread portion 2 comprises an outer tread edge (To), an inner tread edge (Ti), a plurality of main grooves 10, and a plurality of land regions 15. The main grooves 10 include a first main groove 11 whose groove edges are both positioned on an inner-tread-edge-(Ti) side of a tire equator (C), a second main groove 12 arranged on an inner-tread-edge-(Ti) side of the first main groove 11, and a third main groove 13 arranged between the tire equator (C) and the outer tread edge (To) and having a groove width smaller than the first and second main grooves 11 and 12. The land regions 15 include an inner middle land region 16 and an outer middle land region 17 having an axial width larger than the inner middle land region 16.

In a pneumatic tire, a first shoulder block comprises at least one first shoulder circumferential groove which extends in a tire circumferential direction, the at least one first shoulder circumferential groove is respectively separated from a pair of first shoulder slits, a center block comprises at least one center circumferential groove which extends in the tire circumferential direction, and the at least one center circumferential groove is respectively contiguous with a pair of center slits.

In a pneumatic tire, a plurality of main grooves include at least one straight main groove for which end edges at a tread surface are respectively parallel to a tire circumferential direction, and at least one zigzag main groove for which end edges at the tread surface are respectively inclined with respect to the tire circumferential direction, the end edges at the tread surface of the at least one zigzag main groove include an inner end edge which is arranged toward an interior in a tire axial direction, and an outer end edge which is arranged toward an exterior in the tire axial direction, and an outwardmost location in the tire axial direction of the inner end edge is arranged toward the interior in the tire axial direction from an inwardmost location in the tire axial direction of the outer end edge.

A motorcycle tyre has a tread band including a central portion and two shoulder portions arranged at axially opposite sides of the central portion. The central portion includes a first plurality of grooves extended according to a substantially longitudinal direction and alternatively arranged at opposite sides of the equatorial plane of the tyre. Each groove of the first plurality of grooves has a substantially curvilinear course such as to form a concavity. The central portion further includes a sub-portion substantially free of grooves placed astride the equatorial plane of the tyre. Each of the shoulder portions includes a second plurality of grooves arranged obliquely relative to the equatorial plane of the tyre.

A heavy truck tire tread is provided that has a rolling direction that is in a longitudinal direction of the tread. A circumferential sipe (20) is present and extends in the longitudinal direction completely around the tread. The circumferential sipe does not bound a sacrificial rib. A plurality of micro sipes (22) engage the circumferential sipe and are located on opposite sides of the circumferential sipe in the lateral direction. The micro sipes extend from the circumferential sipe so as to terminate within rubber of the tread at a terminal end.

In a tire, each of first and second circumferential grooves include groove portions arranged discontinuously in a row in a circumferential direction. The groove portions are arranged in a staggered manner in the circumferential direction. A distance D1 from an equatorial plane to a center line of the first circumferential groove and a distance D2 from the equatorial plane to a center line of the second circumferential groove satisfy 0.90≤D2/D1≤1.10. A maximum groove width W1 of the groove portion of the first circumferential groove and a maximum groove width W2 of the groove portion of the second circumferential groove satisfy 0.90≤W2/W1≤1.10. A maximum circumferential length L1 of the groove portion of the first circumferential groove and a maximum circumferential length L2 of the groove portion of the second circumferential groove satisfy 0.90≤L2/L1≤1.10.