The pneumatic tire for passenger vehicle includes on a tread portion a main belt formed of at least two inclined belt layers formed of a rubberized layer of cords extending in a manner inclined with respect to a tire circumferential direction, and a reinforcing belt formed of at least one circumferential belt layer formed of a rubberized layer of cords extending along the tire circumferential direction, the reinforcing belt arranged on a tire radial outer side of the main belt, the main belt and the reinforcing belt arranged spanning from a tire equatorial plain of the tread portion to shoulder portion sides, wherein a thickness between the cords of two of the inclined belt layers adjacent to each other is larger in the shoulder portions than in a central portion of the tread portion.

A pneumatic tire comprises a carcass layer, a belt layer radially outward of the carcass layer, and a tread rubber radially outward of the belt layer. The belt layer includes an angle belt having a belt angle ≥45° and ≤70° in absolute values, a pair of cross belts having belt angles of ≥10° and ≤45° in absolute values and having belt angles of mutually opposite signs, and a reinforcing layer having a belt angle within ±5° relative to a circumferential direction. A width Ws of the reinforcing layer and a cross-sectional width Wca of the carcass layer satisfy 0.60≤Ws/Wca≤0.70. The cross belts are radially outward of the large angle belt. The reinforcing layer is radially inward of the pair of cross belts. A width Wb2 of a wider cross belt of the pair and Wca satisfy 0.79≤Wb2/Wca≤0.89.

A tire having uniform inflation growth is provided. The tire includes a body ply that is displaced from the conventional equilibrium curve along the bead, sidewall, and shoulder portions of the tire in a manner that provides more uniform inflation growth from bead portion to bead portion. Such construction reduces load sensitivity, reduces or eliminates the tire break-in period, and/or decreases the propensity for cracking—particularly along a groove bottom of the tread in the shoulder.

A radial tire (1) for a heavy-duty vehicle of construction plant type, and aims to increase the rupture strength of the hoop reinforcement thereof having circumferential layers, ensuring satisfactory endurance of the crown reinforcement thereof. According to the invention, the at least one circumferential hooping layer (71, 72) comprises a median portion (711, 721) having a median width (L11, L21) and a median tensile elastic modulus (E11, E21), and two lateral portions (712, 722) that axially extend the median portion (711, 721) on either side and each have a lateral width (L12, L22) and a lateral tensile elastic modulus (E12, E22), the lateral width (L12, L22) is at least equal to 0.05 times the median width (L11, L21), and the lateral tensile elastic modulus (E12, E22) is at most equal to 0.9 times the median tensile elastic modulus (E11, E21).

Provided is a pneumatic tire that includes a belt reinforcing layer formed of an organic fiber cord. A belt layer disposed on an outer circumferential side of a carcass layer in a tread portion is formed of monofilament wires having a wire diameter of 0.30 mm or more and 0.45 mm or less. The belt reinforcing layer is disposed on an outer circumferential side of the belt layer, is formed of an organic fiber cord that is made of a polyethylene terephthalate fiber and has an intermediate elongation under 2.0 cN/dtex load of from 2.0% to 4.0%.

A tire includes an electronic device, such as a RFID chip, within the body of the tire. For particular embodiments, a RFID chip is disposed within a tire belt. The RFID chip may be disposed on an inner or outer belt. The RFID chip is connected to at least one steel cords forming an antenna for the RFID chip. The steel cords are disposed at a first angle and second angle with respect to the tire equator. A method of joining the RFID chip to a tire cord is also provided.

The pneumatic tire includes a carcass layer, a belt layer disposed on an outer side of the carcass layer in a radial direction, and a tread rubber disposed on an outer side of the belt layer in the radial direction. Additionally, the carcass layer has a cord angle of 80° or more and 100° or less. Additionally, the belt layer is formed by layering a first reinforcing belt, a second reinforcing belt that is narrower than the first reinforcing belt, and an auxiliary belt that is spaced apart from a tire equatorial plane and disposed between the carcass layer and the first reinforcing belt. Additionally, the first reinforcing belt and the second reinforcing belt have cord angles of 11° or more and 30° or less, and the auxiliary belt has a cord angle of 55° or more and 70° or less.

A passenger vehicle tire having rolling resistance without negatively affecting the grip and behaviour. The tread (2) has a radial height H.sub.S between 5 mm and 8 mm, a volumetric void ratio T.sub.EV between 22% and 30%, a total volume V.sub.CP of the main voids (241) at least equal to 80% of the total volume V.sub.C of the voids (24), and comprises an elastomeric compound having a glass transition temperature T.sub.g between 22° C. and 5° C., a Shore A hardness between 45 and 65, and a dynamic loss tgδ at 23° C. at least equal to 0.13 and at most equal to 0.39. The metal reinforcers of the working layers (41, 42) are steel monofilaments having a cross section S with a smallest dimension Dmin between 0.20 mm and 0.50 mm. The monofilaments distributed at a density d.sub.T between 100 threads/dm 200 threads/dm, each working layer (41, 42) having a mean radial thickness E.sub.T between D+0.1 mm and D+0.6 mm.

A tire for an agricultural vehicle with a metal crown reinforcement, with improved endurance of the crown reinforcement thereof through the choice of a suitable tread. For each tread portion (21), positioned axially, with respect to the equatorial plane (E) of the tire (1), at an axial distance DE at most equal to 0.36*L, and having an axial width LE equal to 0.08*L, the product TEVL*(H/B) of the local volumetric void ratio of the tread portion (21) and the circumferential slenderness H/B of each tread pattern element (22) of said tread portion (21) is at most equal to 0.35.

The invention is a tyre comprising, in the central part of its crown, at least one undulation (51) of the radially outermost crown layer, having a radial amplitude A at least equal to 1 mm. At least one bead comprises, aside from the radial carcass layer and the bead wire, a radial reinforcing element that is such that the axial distance between the radial reinforcing element and the axially innermost carcass layer is at least equal to 1 mm and at most equal to 12 mm at the point of the radial reinforcing element that is situated 30 mm from the radially innermost point of the bead wire, for a better trade-off between the stiffness of the undulating crown and of the bead.