A radial tire (1) for an agricultural vehicle, which has a speed index at least equal to D for a maximum speed equal to 65 km/h, the authorized inflation pressure of which during use on loose ground is less than or equal to 1 bar and the load index of which is at least equal to 158, the tread pattern of which comprises lugs with a radial height at least equal to 45 mm, having a crown reinforcement (3) with at most 4 crown layers (31, 32, 33, 34), each having reinforcing elements having a tensile breaking force at least equal to 32 daN and having an aramid strand and a nylon or PET textile fibre strand, the aramid strand having a tensile breaking force at least equal to 30 daN.

In a pneumatic tire including a tread portion, a sidewall portion, a bead portion, a carcass layer mounted between a pair of bead portions, a plurality of main grooves extending in the tire circumferential direction and formed in the tread portion, and a plurality of land portions defined by the main grooves, the carcass layer includes a carcass cord formed of a polyester fiber cord, an elongation at break of the carcass cord is from 20% to 30%, and a groove area ratio SgA in a ground contact region of the tread portion is from 20% to 40%, a groove area ratio SgB in a center region of the tread portion satisfies a relationship 1.1≤SgB/SgA≤1.5, and a depth of the main groove included in the center region is from 5 mm to 8 mm.

A tyre for vehicle wheels comprises a support structure and a tread band arranged in a radially outer position with respect to the support structure. The support structure comprises a plurality of hybrid reinforcing cords (10). Each of the hybrid reinforcing cords (10) has at least two strands (20) twisted together with a predetermined twisting pitch. Each of said at least two strands (20) comprises at least one monofilament textile wire (21) and at least one multifilament textile yarn (22) comprising a plurality of textile filaments (22a). In any cross section of the hybrid reinforcing cord (10), said at least one monofilament textile wire (21) is at least partially embedded in the filaments (22a) of said at least one multifilament textile yarn (22).

A tyre (1) for motorcycles comprises a carcass structure (2), a belt structure (10) applied in radially outer position with respect to the carcass structure (2), a tread band (11) applied in radially outer position with respect to the belt structure (10), wherein the carcass structure (2) comprises at least one carcass ply (3). The carcass ply (3) comprises a plurality of reinforcing cords (20) comprising a first end (21) and a second end (22) twisted together, wherein the first end (21) is a hybrid yarn (23) comprising a plurality of first filaments (24) mixed with a plurality of second filaments (25), wherein the filaments of the plurality of first filaments (24) are made from a single material having a first modulus and wherein the filaments of the plurality of second filaments (25) are made from a single material having a second modulus different from the first modulus. The second end (22) is a textile yarn (28) comprising a plurality of third filaments (29) made from at least one material having a third modulus.

Multicomposite material (R1, R2) including at least one monofilament (10) made of glass-resin composite including glass filaments (101) embedded in a thermoset polyester resin (102), this monofilament being covered with at least two superposed layers of different materials, a first layer (12) arranged on the surface of the monofilament and a second layer (14) of polyester thermoplastic material sheathing the whole, characterized in that the first layer (12) is a layer of benzoxazine and/or polybenzoxazine; finished articles or semi-finished products made of rubber, such as vehicle tyres, reinforced with such a material.

Provided are a sheet, a method of its preparation, and a tire comprising the sheet, wherein the sheet comprises tire cords, a topping rubber for topping the tire cords, and a conductive fiber located on the surface of the topping rubber. The sheet can provide tires, on which a rubber composition with a low electricity-transmitting property and low rolling resistance is applied, with excellent conductivity.

A tire (1) for a sprayer-type agricultural vehicle, which has a speed index at least equal to D for a maximum speed equal to 65 km/h, which tire is intended to be mounted on a rim with a diameter at least equal to 42 inches, the maximum use pressure of which is at least equal to 3.2 bar and the load index of which is at least equal to 170. The Tire has a crown reinforcement (3) having at most 4 crown layers (31, 32, 33, 34), each having reinforcing elements with a tensile breaking force at least equal to 32 daN and having an aramid strand and a nylon or PET textile fibre strand, the aramid strand having a tensile breaking force at least equal to 30 daN.

A pneumatic tire includes: a belt layer including a belt cord is arranged; and a belt reinforcing layer in which an organic fiber cord is arranged, the organic fiber cord is a hybrid cord formed by twisting an aramid yarn and a nylon yarn together, and a ratio (Sr/Sc) of a rubber cross-sectional area (Sr) to a cord cross-sectional area (Sc) is 1.5 to 2.0, and a value obtained by dividing, by 1000, a sum of a product (A) of a load LASE5% (N) at 5% elongation of the organic fiber cord, a cord count (per 25 mm), and the number of belt reinforcing layers, and a product (B) of a load (N) at 0.5% elongation of the belt cord, cos θ in which a belt angle is defined as θ, a cord count (per inch), and the number of belt layers is 11 or more.

Provided is an elastomer reinforcement cord with improved rust inhibition. An elastomer reinforcement cord (10) includes metal filaments and a polymer material. The elastomer reinforcement cord (10) has a multi-strand structure which includes: at least one core strand (21) formed by twisting plural metal filaments (1a) and (1b) together; and two or more sheath strands (22) each formed by twisting plural metal filaments (11a) and (11b) together, and in which the sheath strands are twisted together around the core strand. In a region surrounded by a line connecting the centers of the metal filaments constituting the outermost sheath layer of the core strand at a cross-section in a direction orthogonal to an axial direction after vulcanization of the core strand, when a region occupied by other than the metal filaments is defined as a gap region, a filling rate, which is a ratio of the area of the polymer material with respect to the gap region, is 52% to 120%.

A composite cord is composed of two first strands formed of aramid fibers and one second strand formed of nylon fibers. In a cross section perpendicular to a length direction, a ratio L2/L0 of a length L2 of an exposed surface of the second strand along the outer cord periphery to a length L0 of an exposed surface of the composite cord along the outer cord periphery is in a range of 0.30 or more and 0.40 or less.