A pneumatic tire in which a side reinforcement layer formed of a treated member is arranged, the treated member formed by coating with rubber organic fiber cords extending parallelly to ply cords of a carcass ply of the carcass main body, only on a sidewall portion of a half portion on one tire widthwise side; a tire radial inner end of the side reinforcement layer is located on a side inner in the tire radial direction than a tire radial outermost position of a rim flange, and a tire radial outer end of the side reinforcement layer overlaps the belt by 5 mm or more in a tire widthwise direction; and the tread portion has one or more circumferential main grooves, and a contact width of a tire widthwise outermost land portion is larger than a contact width of a tire widthwise outermost land portion.

A pneumatic tire in which a side reinforcement layer formed of a treated member is arranged, the treated member formed by coating with rubber organic fiber cords extending parallelly to ply cords of a carcass ply of the carcass main body, only on a sidewall portion of a half portion on one tire widthwise side; a tire radial inner end of the side reinforcement layer is located on a side inner in the tire radial direction than a tire radial outermost position of a rim flange, and a tire radial outer end of the side reinforcement layer overlaps the belt by 5 mm or more in a tire widthwise direction; and the tread portion has one or more circumferential main grooves, and a contact width of a tire widthwise outermost land portion is larger than a contact width of a tire widthwise outermost land portion.

A tire with improved handling having a stiffening structure with a stiffening element extending continuously in the toroidal interior cavity from a crown interface connected to a radially inner face of the crown to a bead interface connected to an axially inner face of the bead. The stiffening structure is distributed circumferentially over the circumference of the tire, the axially outermost stiffening element interface is positioned, with respect to the equatorial plane (XZ), at an axial distance A at most equal to 0.45 times the axial width S, and the radially outermost stiffening element bead interface is positioned, with respect to a radially innermost point (I) of the axially inner face of the bead at a radial distance B at most equal to 0.5 times the radial height H.

A tire with improved handling having a stiffening structure with a stiffening element extending continuously in the toroidal interior cavity from a crown interface connected to a radially inner face of the crown to a bead interface connected to an axially inner face of the bead. The stiffening structure is distributed circumferentially over the circumference of the tire, the axially outermost stiffening element interface is positioned, with respect to the equatorial plane (XZ), at an axial distance A at most equal to 0.45 times the axial width S, and the radially outermost stiffening element bead interface is positioned, with respect to a radially innermost point (I) of the axially inner face of the bead at a radial distance B at most equal to 0.5 times the radial height H.

A pneumatic tire includes a cap ply disposed between a belt layer and a tread portion so as to wholly cover the belt layer in a tire width direction, and two edge plies disposed between the belt layer and the tread portion so as to respectively cover edge portions of the belt layer in a tire width direction. A first region and a second region are formed by dividing the tread portion in two by a tire equator plane. The first region has a first void ratio, and the second region has a second void ratio smaller than the first void ratio.

A pneumatic tire includes a cap ply disposed between a belt layer and a tread portion so as to wholly cover the belt layer in a tire width direction, and two edge plies disposed between the belt layer and the tread portion so as to respectively cover edge portions of the belt layer in a tire width direction. A first region and a second region are formed by dividing the tread portion in two by a tire equator plane. The first region has a first void ratio, and the second region has a second void ratio smaller than the first void ratio.

A pneumatic tire whose mounting location on a vehicle is specified and which comprises a belt disposed radially outside the carcass and composed of belt cords laid at an angle of from 15 to 40 degrees with respect to the tire circumferential direction, and a band disposed radially outside the belt and composed of first and second band cords laid at an angle of not more than 5 degrees with respect to the tire circumferential direction. The band comprises an inboard first part composed of the first band cord having a first modulus M1, and an outboard second part composed of the second band cord having a second modulus M2 more than the first modulus M1. The number of laminated plies of the band in the inboard first part is more than the number of laminated plies or a single ply of the band in the outboard second part.

A pneumatic tire whose mounting location on a vehicle is specified and which comprises a belt disposed radially outside the carcass and composed of belt cords laid at an angle of from 15 to 40 degrees with respect to the tire circumferential direction, and a band disposed radially outside the belt and composed of first and second band cords laid at an angle of not more than 5 degrees with respect to the tire circumferential direction. The band comprises an inboard first part composed of the first band cord having a first modulus M1, and an outboard second part composed of the second band cord having a second modulus M2 more than the first modulus M1. The number of laminated plies of the band in the inboard first part is more than the number of laminated plies or a single ply of the band in the outboard second part.

A run-flat tire has a carcass that spans a region between a pair of bead portions, a side reinforcement layer that is provided at a tire side portion that connects the bead portions and a tread portion, an inclined belt layer that is provided at an outer side of the carcass in a tire radial direction so as to span a tire equatorial plane CL, and that is formed by cords that are inclined relative to the tire circumferential direction, and a reinforcement cord layer that is provided at an outer side of the inclined belt layer in the tire radial direction, and only on a half portion of the tire that is located on an inner side in a tire fitting direction of the tire equatorial plane CL, and that is formed by cords that are inclined relative to the tire circumferential direction.

A run-flat radial tire is provided with a side reinforcement rubber layer that extends in the tire radial direction along an inner face of a carcass and an angled belt layer that is provided at the tire radial direction outer side of the carcass. An overlap length L between a maximum width angled belt layer and the side reinforcement rubber layer satisfies the relationship L>0.14 SH with a tire section height SH. A thickness GD of the side reinforcement rubber layer at a position that is 14% of the tire section height to the tire axial direction inner side from a tire axial direction end portion of the maximum width angled belt layer and a thickness GA of the side reinforcement rubber layer at a maximum width position of the carcass satisfy the relationship GD/GA0.3.