A tire includes a first circumferential main groove 11 and a second circumferential main groove 12 in a tread surface 1. A resonator 21 is formed in an intermediate land portion 20 partitioned between the first circumferential main groove and the second circumferential main groove. The resonator has an auxiliary groove 211 whose both ends terminate within the intermediate land portion. The groove depths D1 of the first and second circumferential main grooves are 50% or less of the groove widths W2 of the first and second circumferential main grooves, respectively. The groove width W3 of the auxiliary groove of the resonator is 80% or less of the groove depth D1 of the first circumferential main groove.

A tire (1) in which at least one of the said tread pattern blocks (51) comprises a circumferential reinforcing element (52) positioned axially on the inside relative to the said at least one groove (71) when working from the outside towards the inside and axially close to the said circumferential groove, the circumferential reinforcing element (52) is made of a rubber compound having a dynamic shear modulus G* at least twice as high as the dynamic shear modulus G* of the rubber compound of the rest of the blocks of the tread, the circumferential reinforcing element (52) extends radially from the radially exterior surface of the said crown reinforcement (6) towards the surface of the said tread with an axial width which decreases progressively with increasing radial proximity to the outside, and in which the said circumferential reinforcing element (52) partially forms the axially internal lateral face (7i) of the said at least one of the said tread pattern blocks (51).

Steering stability performance on dry road surfaces and steering stability performance on wet road surfaces are improved. A land portion width Wcc of a center land portion (31) and a land portion width Wco of an outer side middle land portion (32) satisfy a relationship of Wcc<Wco. In addition, a ground contact surface (10) of each of the outer side middle land portion (32) and an outer side shoulder land portion (34) is formed to protrude toward an outer side in a tire radial direction with respect to a reference profile PRco, PRso, and a protruding amount Hco of the outer side middle land portion (32) and a protruding amount Hso of the outer side shoulder land portion (34) satisfy a relationship of Hco<Hso.

A tyre includes a tread portion provided with a circumferential groove and a lateral groove. The at least one lateral groove includes a connected portion connected to the circumferential groove. The circumferential groove includes a groove bottom provided with groove bottom protruding portions protruding outwardly in the tyre radial direction. Each groove bottom protruding portion includes a first surface portion extending in the tyre radial direction and facing a first circumferential direction, and a second surface portion arranged on a second circumferential direction opposite to the first circumferential direction and extending at a larger angle with respect to the tyre radial direction than that of the first surface portion. In a tread plan view, at least a part of the groove bottom protruding portions is located in a lateral-groove extended region in which the connected portion is extended into the circumferential groove along the tyre axial direction.

In a pneumatic tire, an elongation at break (EB) of carcass cords constituting a carcass layer satisfies a condition of EB≥15%. A tread portion includes a pair of center main grooves each extending in a tire circumferential direction with a tire equator line interposed therebetween, and a center land portion defined by the pair of center main grooves. A ratio (Wc/Wb) of a width (Wc) of the center land portion to a width (Wb) of a widest belt within a belt layer in the tire width direction satisfies a condition of 0.10≤Wc/Wb≤0.20. An elongation at break (EB) of the carcass cords and the ratio (Wc/Wb) of the width (Wc) of the center land portion to the width (Wb) of the widest belt satisfy a condition of 350≤10×1/(Wc/Wb)+20×EB≤900.

A tire tread includes a pair of first circumferential main grooves in a first half-tread region on one side in a tire width direction, a pair of second circumferential main grooves in a second half-tread region, first sipes provided in a first region between the first circumferential main grooves, a circumferential narrow groove having a groove width smaller than a groove width of the first circumferential main groove and extending in the tire circumferential direction within the first region, and sipes in a second region between the second circumferential main grooves, extending in the tire width direction, and closing within the second region. The number of intervals of the second sipes mutually adjacent is larger than the number of intervals of the first sipes mutually adjacent.

A tyre comprises a tread portion comprising a shoulder main groove and a shoulder land region. The shoulder land region includes an outer region, a middle region, and an inner region. The shoulder land region is provided with a plurality of shoulder sipes having components in a tyre axial direction. A sipe ratio of the middle region is smaller than the sipe ratio of the outer region and the sipe ratio of the inner region.

A tire comprises a tread portion axially divided into four land regions. The tire has a mounting direction to a vehicle and the land regions 4 include a widest outboard middle land region. The outboard middle land region is provided with first, second and third inclined grooves. The first inclined groove extends from a crown main groove and terminates within the outboard middle land region. The second inclined groove has its both ends terminated within the outboard middle land region. The third inclined groove intersects the first and second inclined grooves.

A pneumatic tire is provided. A carcass layer includes carcass cords formed of organic fiber cords obtained by intertwining a filament bundle of organic fibers, and includes turn-up portions formed by turning up end portions of a pair of bead portions to an outer side in a tire width direction. The carcass cords have an elongation at break (EB) satisfying EB≥15%. A portion of a belt layer located in a width range of 10% of a width of a second widest belt in the belt layer on each of a left side and a right side of a tire equator line in a tire width direction has a belt angle (θc) satisfying 0.349 rad≤θc≤0.56 rad. The elongation at break (EB) of the carcass cords and the belt angle (θc) satisfy 800<1140×θc+20×EB<1400.

An outer surface TS of a tire 2 includes a tread surface T and a pair of side surfaces S. A plurality of arcs representing a contour of the tread surface T include a pair of crown arcs. A ratio of a radius CR1 of a first crown arc to a radius CR2 of a second crown arc is not less than 1.10 and not greater than 1.70. A total groove volume of a first circumferential groove 48 located in a zone from an equator to a first tread reference end TE1 is larger than a total groove volume of a second circumferential groove 50 located in a zone from the equator to a second tread reference end TE2.