A dipped and heat-set aramid cord, comprising a plurality of cord plies having a spacing between the plurality of cord plies, wherein a TASE at 2.0% elongation of the aramid cord is less than 2.0 cN/dtex; wherein the spacing between the plurality of cord plies is more than 10% and less than 80% of a cord diameter (D) of the cord plies.

A dipped and heat-set carbon fiber cord, including a plurality of cord plies having a spacing between the plurality of cord plies. A TASE at 2.0% elongation of the carbon fiber cord is less than 2.0cN/dtex. The spacing between the plurality of cord plies is longer than 15% and shorter than 80% of a cord diameter of the plurality of cord plies.

Provided are a pneumatic tire with improved dimensional stability, low loss property, and durability and a method of producing the same. In a pneumatic tire, a rubber-fiber composite is used in at least any of a carcass ply and a cap ply, the rubber-fiber composite containing: a fiber cord made of polyamide multifilament fibers having a glass transition temperature in a range of 150 C. to 200 C.; and a rubber, a layer made of a resorcin-formalin-latex adhesive is formed at an interface between the fiber cord and the rubber, and a thermal contraction stress at 177 C. of the fiber cord with the layer formed thereon is 0.01 cN/dtex to 0.2 cN/dtex.

The invention relates to a reinforcement ply for a pneumatic vehicle tire, preferably for a belt bandage ply of a pneumatic vehicle tire, where the reinforcement ply has strengthening elements comprising at least one multifilament yarn, and where the at least one multifilament yarn is composed of polyamide based mainly on renewable raw materials. For the conservation of the environment and resources, coupled with improved product quality, the multifilament yarn consists of nylon-4,10.

The invention is directed to a pneumatic vehicle tire having a carcass and a belt built up on the radial outside of the carcass. The tire includes a profiled tread which is built up on the belt on the radial outside of the belt. The belt is formed from at least four belt plies which are arranged one on top of the other from the radial inside to the radial outside. The first belt ply and the second belt ply are crossing working plies. The reinforcing elements of the first and second belt plies are arranged at an angle of 10 to 45 to the circumferential direction. The reinforcing elements of the fourth belt ply are arranged at an angle of 40 to 75 to the circumferential direction and the reinforcing elements of the third belt ply are arranged at an angle of 0 to 5 to the circumferential direction.

The present invention relates to a novel tire cord reinforcement made of ultra high modulus aramid fibers which has bielastic tensile properties. The dipped and heat-set aramid cord includes at least two cord plies and there is a spacing between the cord plies. Such a novel bielastic tire cord improves high speed durability and eliminates flatspotting when used as cap ply in pneumatic radial tires.

The present invention relates to a novel tire cord reinforcement made of ultra high modulus carbon fibers which has bi-elastic tensile properties. The dipped and heat-set carbon fiber cord includes at least two cord plies and there is a spacing between the cord plies. Such a novel bi-elastic tire cord improves high speed durability and eliminates flatspotting when used as cap ply in pneumatic radial tires.

A motorcycle tire comprising: a carcass extending between a pair of bead portions 4 through a tread portion 2 and a pair of sidewall portions 3, and a band 7 disposed radially outside the carcass in the tread portion. The band 7 is composed of a ply of a spirally wound steel band cord 10, and the steel band cord 10 has a compressive stiffness of not more than 500 N/mm, a bending rigidity of not more than 15.0 g cm, and an elongation percentage at 49N of 0.5% to 2.5%.

Pneumatic radial tire (1) having improved high speed durability and low flatspot feature, and which has polyethylene terephthalate cap ply reinforcement layer (6). The objective is to provide a pneumatic radial tire (1) wherein the pressure on the belt package (5) is increased at high speed and high temperature by increasing the thermal shrinkage force of the cap ply cord.

A motorcycle tire 1 comprises a tread portion 2, sidewall portions 3, bead portions 4, a carcass 6 extending between the bead portions, and a tread reinforcing layer 7 disposed radially outside the carcass in the tread portion. The tread reinforcing layer 7 is composed of a helically wound strip 10 of parallel reinforcing cords 11 coated with topping rubber 12. The winding pitch Pm of the strip 10 in middle parts Mi of the tread reinforcing layer is less than the winding pitch Pc of the strip 10 in a central part Cr, and less than the winding pitch Ps of the strip 10 in shoulder parts Sh.