A heavy-duty pneumatic tire includes a section width being equal to or less than 335 mm, an aspect ratio being equal to or less than 55%, and a toroidal carcass extending between axially spaced bead portions through a tread portion and sidewall portions, wherein the carcass includes a carcass ply which includes a main portion and a turn-up portion, a belt layer disposed radially outward of the carcass in the tread portion, a sidewall rubber defining an outer sidewall profile of each sidewall portion, and a chafer rubber defining an outer bead profile of each bead portion, wherein in each bead portion, on a straight line that is perpendicular to the main portion of the carcass ply and passes a radially inner end of the sidewall rubber, the chafer rubber has a thickness of from 40% to 60% of a thickness of the bead portion.

A radial aircraft tire (1), defined in three main directions, circumferential (X), axial (Y) and radial (Z), comprises a crown (2) surmounted by a tread (3), two sidewalls (4), two beads (5), each sidewall (4) connecting each bead (5) to the crown (2), a carcass reinforcement (7) that is anchored in each of the beads (5) at at least one bead wire (6) and extends in the sidewalls (4) as far as the crown (2), a crown reinforcement or belt (10) that extends in the crown (2) in the circumferential direction (X) and is situated radially between the carcass reinforcement (7) and the tread (3), said carcass reinforcement (7) having at least one ply referred to as carcass ply in the form of a rubber matrix reinforced with radially oriented reinforcing elements, referred to as radial textile reinforcers, the latter being constituted entirely or partially by textile plied yarns of nylon comprising N multifilament strands twisted together to form a helix, characterized in that: N is greater than 2; the count of each strand is greater than 180 tex; the tenacity of each strand is greater than 75 cN/tex; the elongation at break of each strand is greater than 14%; the tenacity of each plied yarn is greater than 60 cN/tex; the elongation at break of each plied yarn is greater than 18%; and the helix angle of each plied yarn is greater than 20.

In a tire of the present disclosure, an overlap width, between a conductive member and a rubber chafer, in an extending direction of the conductive member is 1 mm or more. A method of manufacturing a tire of the present disclosure includes vulcanizing a raw tire in a state such that an overlap width, between a conductive member and a rubber chafer before vulcanization, in an extending direction of the conductive member is 10 mm or more. In a raw tire of the present disclosure, an overlap width, between a conductive member and a rubber chafer before vulcanization, in an extending direction of the conductive member is 10 mm or more.

In a pneumatic tire including a carcass layer mounted between a pair of bead portions and a belt reinforcing layer disposed on an outer circumferential side of the carcass layer, the carcass layer is formed of a carcass cord made of an organic fiber cord, an elongation at break of the carcass cord is set to 20% or more, an elongation under a load of 1.5 cN/dtex of the carcass cord on the inner circumferential side of the belt layers is set to from 5.5% to 8.5%, the belt reinforcing layer is formed of a cover cord made of an organic fiber cord, and a tensile strength of the cover cord per width of 50 mm at a 3.0% elongation is set to from 2.8 kN to 4.0 kN.

A run flat tire 1 comprises a carcass 6 formed of a carcass ply 6A extending between a pair of bead portions 4 in a toroidal manner and a side reinforcing rubber layer 9 having a substantially crescent cross-sectional shape disposed on an inner side of the carcass at each of sidewall portions. steel cords 60 each including 1 to 4 filaments 61 having a strand diameter in a range of from 0.25 to 0.30 mm are arranged in the carcass ply 6A, and an outer diameter D of each of the steel cords 60 is not less than 0.62 mm.

Disclosed are a tire fiber having high adhesion to other members, a rubber/fiber composite having improved adhesion between rubber and fiber, and a tire having high hydraulic durability. The tire fiber comprises a polyethylene-2,5-furandicarboxylate (PEF) raw yarn, wherein the PEF raw yarn comprises as a raw material PEF having a terminal carboxylic acid amount of 1 to 100 mmol/kg.

A tire comprises: a tire frame member made of resin and including a bead portion and a side portion positioned on a tire radial direction outer side of the bead portion; and a reinforcing layer including an organic fiber and a resin material with which the organic fiber is coated, wherein the organic fiber comprises: a cord member including at least one of an aramid fiber material or a polyester fiber material; an undercoat layer provided on the cord member and formed from a first composition including at least one of an epoxy compound or an isocyanate compound; and an adhesive layer provided on the undercoat layer and formed from a second composition including a resorcinol-formaldehyde resin.

The invention relates to a tire having at least one carcass reinforcement (2) comprising reinforcers, surmounted radially on the outside by a crown reinforcement (3) comprising two axial ends S, itself radially on the inside of a tread (4), said crown reinforcement (3) being made up of at least one layer of reinforcement elements, said tread (4) being connected to two beads (5) by way of two sidewalls (6), said beads (5) being intended to come into contact with a rim flange having a rim flange top C, each bead having at least one circumferential reinforcement element (7) known as a bead wire, said carcass reinforcement (2) comprising an end (8) at each bead (5), the end (8) of the carcass reinforcement (2) being turned up once in an outward radial direction of the tire and about said bead wire, so as to form a turnup, then being folded in the radially outward direction so as to form a fold of the carcass ply (2), said fold forming a radially external end (12a) and three adjacent parts along an axial axis made up of a central part (10), of an axially internal lateral part (11), and of an axially external lateral part (0), the fold being executed in an outward axial direction with respect to the center of the tire, characterized in that a decoupling elastomer composition (14) having a secant modulus at 10% extension of greater than or equal to 10 MPa and preferably greater than or equal to 30 MPa and less than or equal to 60 MPa is present between the axially internal lateral part and the central part of said turnup, and at the radially external end (12a) of said turnup (12), said elastomer composition being present along a radial length comprised between the radially external end of the turnup and a radially internal point F with respect to the end of said turnup, said point being situated on the sidewall and at a distance from said radially external end by a length greater than 10 mm, and in that the radially external end (12a) of the turnup (12) is disposed between the rim flange top C and a point D, said points C and D being situated at the surface of the sidewall (6) and disposed on either side of a point E situated on the sidewall corresponding to the nominal section width, said point D being disposed at a maximum radial length equal to 85% of the length present between the axial end S of the crown reinforcement (3) and the rim flange top C.

The tire has a radial carcass reinforcement, the seat diameter of which is strictly greater than 19.5 inches. The metal reinforcing elements of the at least one layer of the carcass reinforcement are layered cords which include several steel threads that have a weight content of carbon C such that 0.01%C<0.4%. The at least one carcass reinforcement layer has a breaking force per unit width of between 35 daN/mm and 75 daN/mm, and the diameter of the cords is greater than 0.7 mm.

Disclosed is a method for producing a polyethylene-2,5-furandicarboxylate (PEF) raw yarn which includes a drawing step wherein an undrawn yarn, obtained by melt-spinning of a PEF-containing resin composition, is drawn into a PEF raw yarn, wherein a draw ratio in the drawing step is greater than 6.0 times.