The tire comprises a crown, two sidewalls and two beads, each sidewall connecting each bead to the crown, a carcass reinforcement that is anchored in each bead and extends in each sidewall and radially on the inside of the crown, each bead comprising at least one continuous filamentary reinforcing element (40) comprising N≥2 circumferential turns which are radially superposed on one another. The continuous filamentary reinforcing element (40) comprises a radially outer free end (E1) and a radially inner free end (E2). At least one of the radially outer free end (E1) and the radially inner free end (E2) is threaded between two portions (50, 52) arranged radially on the outside and on the inside of the free end (E1, E2) in question.

Motorcycle wheel tyre (1), comprising a carcass structure (2), a belt structure (6) arranged in a radially outer position with respect to the carcass structure (2) and a tread band (8) arranged in a radially outer position with respect to the belt structure (6). The tread band (8) comprises, in an axially inner annular portion thereof, a pair of circumferential grooves (20) arranged on opposite sides with respect to an equatorial plane (X-X) of the tyre (1). The carcass structure (2) comprises at least one carcass ply (3) having opposite end edges (3a) associated with respective annular reinforcing structures (4) to form respective beads (15). Each bead (15) comprises at least one reinforcing element (18) made of an elastomeric material having a rigidity in a circumferential direction greater than the rigidity in a radial direction.

A pneumatic tire, wherein, in a state of being mounted on a rim, defining the rim diameter as D, the length from the rim position representing the rim diameter D to the maximum tire radial height as SH, the rim flange height as G, the rim flange radius as R.sub.2, and the bead filler height H.sub.bf as the tire radial height with respect to the rim position representing the rim diameter D, the bead filler height H.sub.bf is less than or equal to a value obtained by the following formula: {SH−(G−R.sub.2)}/4+(G−R.sub.2). The cord is provided in at least one part from a bead portion to a sidewall portion 3 at an angle of 0 to 10° to the circumferential direction.

In a pneumatic tire (1) that achieves both ride comfort and steering stability at a high level, a bead core (5) has a ratio of the maximum width of the core to the height of the core of 0.8 or less in a cross-section in the tire width direction. A cord (9) is provided in at least one part from a bead portion (2) to a sidewall portion (3) at an angle of 0 to 10° with respect to the circumferential direction. The cord (9) has an inflection point in a stress-strain curve, with a low elastic modulus in a low-strain region at or below the inflection point, and a high elastic modulus in a high-strain region above the inflection point.

Assembly comprising a tire and a mounting rim, the tire comprising two beads each comprising at least one annular reinforcing structure and a carcass reinforcement anchored in the two beads by a turn-up, each bead comprising a filler of a rubber composition extending radially a radial distance DBE from the radially innermost point of the annular reinforcing structure, DBE being less than or equal to 10% of the radial height H of the tire, at least one sidewall further comprising a stiffening reinforcement of metallic reinforcing elements oriented at an angle less than or equal to 10 degrees to the circumferential direction, and positioned such that the distance DAE between the radially innermost point of the annular reinforcing structure and the radially outer end of the stiffening reinforcement is greater than or equal to 20% and less than or equal to 40% of H and that the distance DAI between the radially inner point of the annular reinforcing structure and the radially inner end of the stiffening reinforcement is less than or equal to 20% of H.

A pneumatic tire includes a bead portions and a bead core at the bead portions, the tire being mounted to a 15°-tapered specified rim. The bead portions include a portion inward in a radial direction of an extension line of an inner circumferential surface of the bead core, the extension line extending in the lateral direction, that is positioned outward in the tire lateral direction of an imaginary line passing through a first intersection point between the extension line and a tire inner surface and extends inward in the tire radial direction from the extension line at an angle perpendicular to the extension line. An angle α formed by the imaginary line and a line segment passing through a second intersection point between a bead base and the tire inner surface and the first intersection point between the extension line and the tire inner surface is from 0° to 25°.

The present invention provides a tire having improved bead endurance in which cords of a steel chafer are waved and the advancing direction of the waves of the steel chafer is perpendicular to the advancing direction of carcass cords, thereby minimizing cracks at an edge of the carcass. The tire having a chafer structure for enhancing bead endurance includes: a carcass having carcass cords; and a steel chafer covering the carcass and having a plurality of waved chafer cords.

A tire for a motor vehicle comprising: two beads (20); two sidewalls (30) meeting at a crown (25); at least one carcass reinforcement (160) extending from the beads (20) through the sidewalls (30) as far as the crown (25), the carcass reinforcement (160) having a plurality of carcass reinforcing elements and anchored in the two beads (20) by a turn-up around the annular reinforcing structure (70), so as to form in each bead a main strand (162) and a turn-up strand (163); and a stiffening reinforcement (140) arranged in at least one sidewall of the tire, said stiffening reinforcement (140) having a radially inner end (141) and a radially outer end (142), the stiffening reinforcement being formed of a plurality of stiffening elements oriented at an angle less than or equal to 10 relative to a circumferential direction of the tire.

A tire for a motor vehicle comprising: two beads (20); two sidewalls (30) meeting at a crown (25); at least one carcass reinforcement (160) extending from the beads (20) through the sidewalls (30) as far as the crown (25), the carcass reinforcement (160) having a plurality of carcass reinforcing elements and anchored in the two beads (20) by a turn-up around the annular reinforcing structure (70), so as to form in each bead a main strand (162) and a turn-up strand (163); and a stiffening reinforcement (140) arranged in at least one sidewall of the tire, said stiffening reinforcement (140) having a radially inner end (141) and a radially outer end (142), the stiffening reinforcement being formed of a plurality of stiffening elements oriented at an angle less than or equal to 10? relative to a circumferential direction of the tire.

An object of the present invention is to provide: a rubber-fiber composite obtained by coating a core-sheath fiber with a rubber, in which adhesion between the rubber and the fiber is improved and which is thereby allowed to exhibit an improved durability as compared to conventional rubber-fiber composites when used as a reinforcing material; a rubber-resin composite; and a pneumatic tire using the same. The rubber-fiber composite is obtained by coating a reinforcing material with a rubber, which reinforcing material is composed of a core-sheath type composite fiber whose core portion is constituted by a high-melting-point resin having a melting point of 150 C. or higher and sheath portion is constituted by an olefin-based polymer having a melting point lower than that of the high-melting point resin.