A tire for a two-wheeled motorized vehicle includes a tread joined by two sidewalls to two beads, the tread having first and second elastomer compositions, crown reinforcement, radially inside tread having a crown layer having mutually parallel circumferential reinforcers forming an angle at most equal to 5° to the circumferential direction, a carcass reinforcement, radially inside crown reinforcement, having turnup. Carcass reinforcement includes mutually parallel reinforcers, and wrapped, in each bead, from the inside to the outside of the tire, about bead wire in order to form turnup having free end E.sub.2. Carcass reinforcement includes crown portion and lateral portion, crown portion extending axially between first and second ends E.sub.2, E′.sub.2, E.sub.2 and E′.sub.2 being symmetric to equatorial plane P of the tire, lateral portion extending symmetrically to equatorial plane P radially towards the inside, from radially outermost end E.sub.2 to fourth end E.sub.4 disposed at the bead wire.

A tire (10) for a vehicle comprises a radially outermost working layer (41) which comprises at least one undulation (412) in line with a central rib (251) of the tread (2). The undulation (412) is radially on the outside of the points of the working layer (41) in line with the bottom face (243) of the circumferential groove (24) closest to the undulation (412) and has an amplitude of at least 1 mm. The undulation (412) is vertically in line above at least one local reinforcing layer (6) comprising reinforcing elements that are mutually parallel and make with the circumferential direction (XX′) of the tire an angle of which the absolute value is at most equal to 5°.

Provided is a tire in which low rolling resistance is improved by using reinforcing cords containing polyamide multifilaments as reinforcing cords of a reinforcing member of the tire. In a tire (10) that includes at least one belt reinforcing layer (3) covering the full width of a belt (2), the belt reinforcing layer (3) includes, as a constituent, a rubber-cord composite that is formed of a rubber and reinforcing cords containing multifilaments of a semi-aromatic polyamide composed of a polycondensate of an aromatic dicarboxylic acid-containing dicarboxylic acid and a non-aromatic diamine, or a polycondensate of a non-aromatic dicarboxylic acid and an aromatic diamine-containing diamine acid; and, when the width of a maximum-width belt layer constituting the belt (2) is defined as W, a region of at least more than 0.35 W from a tire equatorial plane is a sparse region in terms of the end count of the reinforcing cords in the belt reinforcing layer (3), while regions on the tire width-direction outer side of the sparse region are dense regions.

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 in sidewall portions is set to from 5.0% to 8.0%, 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.

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.

Provided is a pneumatic tire. A belt cover layer including organic fiber cords spirally wound along the tire circumferential direction is provided on the outer circumferential side of a belt layer in a tread portion. The belt cover layer includes at least one full cover layer covering the entire width direction of the belt layer, and the number of layers in the shoulder region is two or less. Polyethylene terephthalate fiber cords of which the elastic modulus at a load of 2.0 cN/dtex at 100° C. is in a range of 3.5 cN/(tex•%) to 5.5 cN/(tex•%) are used as the organic fiber cords constituting the belt cover layer. The ratio Sh/Ce of a rising amount Sh in the shoulder region and a rising amount Ce at a tire equator position during traveling at 240 km/h is 0.85 to 1.15.

A tire includes a carcass, a tread disposed radially outward of the carcass, a sidewall including a shoulder extends toward the tread, and a reinforcing structure positioned radially between the carcass and the tread. The reinforcing structure includes a plurality of belts extending axially toward the shoulder and an overlapping spiral wound strip positioned at a radially outermost portion of the reinforcing structure. The overlapping spiral wound strip includes a uniform width having groups of four first cords with a single second cord therebetween. The first cords include a hybrid construction and the second cords include a single material construction.

A two-wheeled vehicle tyre includes a tread portion being provided with a belt layer and a tread rubber disposed radially outwardly of the belt layer. The belt layer includes steel cords oriented along a tyre circumferential direction. The tread rubber includes a cap rubber forming a tread surface and a base rubber disposed radially inwardly of the cap rubber, wherein 300% modulus (M300c) of the cap rubber is greater than 300% modulus (M300b) of the base rubber, and loss tangent (tan δc) of the cap rubber is smaller than loss tangent (tan δb) of the base rubber.

A tire comprises a crown reinforcement comprising: a working reinforcement comprising a single working layer and a hoop reinforcement arranged radially outside the working reinforcement and comprising at least one hooping filamentary reinforcing element (170) wound circumferentially helically so as to extend axially from one axial edge to the other axial edge of the hoop reinforcement. The or each hooping filamentary reinforcing element (170) consists of: two multifilament strands (1701, 1702) of aromatic polyamide or aromatic copolyamide and one multifilament strand (1703) of aliphatic polyamide or of polyester, or three polyester multifilament strands, each multifilament strand (1701, 1702, 1703) being wound in a helix around a main axis (W) common to the three multifilament strands (1701, 1702, 1703). The hoop reinforcement has a tangent modulus at 1.3% elongation ranging from 200 to 650 daN/mm.

The invention relates to radial-type pneumatic vehicle tires comprising at least one carcass layer (3), a profiled tread (1), a two-layer belt (2), and a belt bandage (6) which covers the belt and which comprises bandage cords that run in the circumferential direction of the tire and consist of at least one thread made of a textile material. The belt bandage (6) has a central bandage part (7) and two lateral bandage parts (8), wherein the central bandage part (7) reaches laterally beyond the edges of the radially outer belt layer (2b), and the two lateral bandage parts (8) adjoin the central bandage part (7), cover the respective remaining edge portion of the two belt layers (2b), and run axially outside of the edges of the radially inner belt layer (2a) so as to contact a carcass layer (3) portion with a width of up to 15 mm. The bandage cord in the central bandage part (7) consists of a single thread, and the bandage cord in the lateral bandage parts (8) consists of two threads twisted together.