A pneumatic tire comprises a tread portion which is asymmetric about a tire equatorial plane. The tread portion comprises a first land portion on a vehicle outer side, and a second land portion on a vehicle inner side. The first land portion comprises a circumferential narrow groove extending in a circumferential direction, a plurality of first auxiliary grooves that pass through the circumferential narrow groove and are disposed at periodic intervals in the circumferential direction, first blocks defined by the plurality of first auxiliary grooves, and first narrow grooves that pass through the circumferential narrow groove and are disposed in the first blocks. The second land portion comprises a plurality of second auxiliary grooves disposed at periodic intervals in the circumferential direction, second blocks defined by the plurality of second auxiliary grooves, and second narrow grooves disposed in the second blocks.

A pneumatic tire includes in a land portion (center land portion 4A) defined by a first circumferential groove (3A) and a second circumferential groove (3B), narrow grooves (third narrow grooves 6C) formed as one set of two grooves provided intersecting the tire circumferential direction and arranged side by side in the tire circumferential direction, communicating with the first circumferential groove (3A) and terminating in the center land portion (4A); and auxiliary grooves (fifth auxiliary grooves 5E) provided intersecting the tire circumferential direction communicating with the second circumferential groove (3B) and terminating within the center land portion (4A) with the positions of the terminating end portions disposed between the terminating end portions of the set of the third narrow grooves (6C) in the tire circumferential direction.

A pneumatic tire includes: a first and second main grooves extending in a tire circumferential direction; first and second inclined grooves extending obliquely toward the same side with respect to the tire circumferential direction and connected to the first and second main grooves; and a block defined by the first and second main grooves and the first and second inclined grooves. The block includes a sub groove having a first portion and a second portion, the first portion being open to an intermediate portion of the first inclined groove and extending in the tire circumferential direction, the second portion being inclined to a side opposite to the first inclined groove, extending from a terminal end of the first portion in a direction away from the first inclined groove, and being open to the first main groove.

A pneumatic tire includes: a first longitudinal groove and a second longitudinal groove extending in a tire circumferential direction; a first lateral groove extending obliquely with respect to a tire width direction and connected to the first longitudinal groove and the second longitudinal groove; a second lateral groove extending obliquely toward a side opposite to the first lateral groove with respect to a tire width direction and connected to the first longitudinal groove and the second longitudinal groove; and a trapezoidal block defined by the first longitudinal groove, the second longitudinal groove, the first lateral groove, and the second lateral groove. The block includes a first sipe and a second sipe extending obliquely toward opposite sides in the tire width direction.

A pneumatic tire includes a tread having a center main groove and a pair of shoulder main grooves. A pair of middle land sections in the tread is positioned between the shoulder and center grooves. Each of the shoulder and center grooves has a groove width set in range of 7 to 9% of width of the tread footprint. An outer middle land portion is divided into first and second middle land portions by a middle narrow groove. The first land portion forms rib. The second land portion has outer middle lateral grooves connected to the center groove and the narrow groove. Each lateral groove includes first portion, second portion having the opposite inclination to the first portion and connection portion between the first and second portions. The connection portion is positioned on the center groove side from the center of the outer land portion in the axial direction.

Particular embodiments of the invention include a tire tread having a plurality of tread elements including one or more shoulder elements arranged along a first lateral side edge of the tread. The one or more shoulder elements include a recessed terminal side spaced apart from the first lateral side edge, where the recessed terminal side is offset in a direction of the tread width towards the second lateral side edge from a pair of adjacent terminal sides of the one or more shoulder elements. A sipe is arranged in connection with a submerged void within the tread thickness, where the sipe and submerged void extend in a direction of the tread width towards a second lateral side edge from the recessed terminal side such that the sipe and submerged void are recessed from the pair of adjacent terminal sides.

A pneumatic tire includes circumferential grooves aligned in a lateral direction and extending in a circumferential direction, lateral grooves aligned in the circumferential direction and extending to cross the circumferential direction, communicating at ends with the circumferential grooves and defining a block-shaped land portion between the circumferential grooves, two narrow grooves aligned in the lateral direction and extending in the circumferential direction, communicating at ends with a lateral groove and dividing the land portion defined by each of the circumferential grooves and each of the lateral grooves into small land portions, the narrow grooves having a smaller groove width than the circumferential grooves and being formed with a bent portion in an intermediate portion, the bent portion being disposed inward in the lateral direction, and bend points of the bent portions being disposed at positions offset from one another in the circumferential direction.

A pneumatic tire is equipped with: a first circumferential groove and a second circumferential groove which are formed on a tread surface of a tread portion and extend along a tire circumferential direction while being arranged side by side in a tire width direction interposing an equatorial plane of the tire therebetween; a plurality of first auxiliary grooves which are arranged in the tire circumferential direction, disposed intersecting the tire circumferential direction, and communicate with the second circumferential groove by passing through the first circumferential groove, and a plurality of second auxiliary grooves which are arranged in the tire circumferential direction, disposed intersecting the tire circumferential direction so as to incline in the tire width direction, communicate with the second circumferential groove, and bend continuously with respect to the first auxiliary groove bounded at the second circumferential groove.

A pneumatic tire includes a tread having a shoulder main groove, and a center main groove such that the tread is divided into a shoulder land portion and a middle land portion between the shoulder main groove and center main groove. The shoulder and center main grooves are formed such that a ratio W1/W2 of a tire axial direction width W1 of the shoulder land portion to a tire axial direction width W2 of the middle land portion is in range of 6 to 2.4. The shoulder land portion has a shoulder narrow groove formed on a shoulder main groove side and continuously extending in the tire circumferential direction such that the shoulder narrow groove has groove width smaller than groove width of the shoulder main groove, and the tread is formed such that a first camber amount is in range of 5.3% to 6.5% of tread ground contact width.

A tire includes a circumferential direction main groove on a tread surface, first and second circumferential supplemental grooves located on both sides of the circumferential direction main groove, and first and second central land portions formed between the circumferential direction main groove and the first and second circumferential direction supplemental grooves. The first and second central land portions have plural width direction sipes, respectively, and each of the width direction sipes extends to the circumferential main groove, the circumferential main groove has shallow grooved portions and deep grooved portions. The deep grooved portions are deeper than the shallow grooved portions, and the shallow grooved portions are shallower than the circumferential supplemental grooves.