A wheel for vehicles includes: a rim and a tire mounted on the rim and inflated to an operating pressure; axial end portions of a tread band of the tire radially spaced apart the same distance from a rotation axis of the wheel and a median circumferential line of the tread band axially shifted by a predetermined distance relative to a mid-line plane of the wheel; the wheel mounted on a car with a camber angle substantially zero and with the median circumferential line shifted toward the outside of the car relative to the mid-line plane.

A tire with a radial carcass reinforcement, having a crown reinforcement, itself capped radially by a tread connected to two beads by two sidewalls, the tread having at least two layers of blended elastomeric compounds that are radially superposed and have a voids ratio that is lower in the central part than at the axially outer parts. A first layer of blended elastomeric compounds of the tread is made up of a first blended elastomeric compound forming a part extending at least into the region of the equatorial plane and of at least two axially outer parts formed of a second blended elastomeric compound, the first blended elastomeric compound having a macro dispersion Z-value higher than 65 and a maximum tan(δ) value, denoted tan(δ)max, lower than 0.120, and the complex dynamic shear modulus G* 1% at 100° C. of the second blended elastomeric compound having a value at least 10% higher than that of the complex dynamic shear modulus G* 1% at 100° C. of the first blended elastomeric compound.

A tire with a radial carcass reinforcement, having a crown reinforcement, itself capped radially by a tread connected to two beads by two sidewalls, the tread containing at least two layers of blended elastomeric compounds that are radially superposed and have a voids ratio that is lower in the central part than at the axially outer parts. A first layer of blended elastomeric compounds of the tread is made up of a first blended elastomeric compound forming a part extending at least into the region of the equatorial plane and of at least two axially outer parts formed of a second blended elastomeric compound, the first blended elastomeric compound having a macro dispersion Z-value higher than 65 and a maximum tan(δ) value, denoted tan(δ)max, lower than 0.150, and the elongation at break in a tearability test of the second blended elastomeric compound at 100° C. having a value at least 10% higher than that of the elongation at break of the first blended elastomeric compound in a tearability test at 100° C.

The invention relates to a tire provided with a tread, said tread comprising a rubber composition based on at least one diene elastomer, a zinc diacrylate derivative in the form of a zinc salt in which R1, R2 and R3 independently represent a hydrogen atom or a C1-C7 hydrocarbon group selected from linear, branched or cyclic alkyl groups, aralkyl groups, alkylaryl groups and aryl groups, which are optionally interrupted by one or more heteroatoms, R2 and R3 being able to form together a non-aromatic ring, and a peroxide. The contents of zinc diacrylate derivative and peroxide are such that the ratio of the peroxide content to the zinc diacrylate derivative content is less than or equal to 0.09, said composition comprising no reinforcing filler or comprising less than 50 phr thereof, the ratio of the filler content to the zinc diacrylate derivative content being less than or equal to 2.

Shoulder drop wear and triangular wear are prevented. A heavy duty tire which includes a shoulder block includes a first arc portion having a radius of curvature, in which a tread contour includes an arc center at a tire equatorial surface at a 5% internal pressure state; and a second arc portion having a radius of curvature of which intersects with the first arc portion at an intersection. An arc center of the second arc portion is located on a radial line passing through the intersection. A ratio of the radii of curvature is between 0.2 and 0.5. A ratio between a tire radial direction distance from an equatorial point to a tread edge and a radial direction distance from the equatorial point to a virtual tread edge on a line extending from the first arc portion is equal to or higher than 0.5 or lower than 1.0.

A tire is a tire in which circumferential grooves, and lug grooves comprising opening portion in tread end and which extend in the tread width direction from the tread end to the circumferential groove, are formed. Projection parts are provided in the groove bottom of the circumferential grooves. The projection parts extend from one side wall forming a circumferential groove to the other side wall opposite the one side wall. Multiple lug grooves are formed at predetermined intervals in the circumferential direction. In the tread surface view of the tire, given points of intersection as the points at which a circumferential groove extension that passes through a circumferential groove intersects with a lug groove extension that passes through a lug groove, the projection parts are provided between a first point of intersection and a second point of intersection adjacent to the first point of intersection in the circumferential direction.

Rubber compound for the preparation of a tread portion of a pneumatic tyre comprising at least a cross-linkable unsaturated chain polymer base, a filler and a vulcanization system and a wax composed of at least 50% by weight of nonacosanediols.

A conjugated diene polymer satisfying following conditions (1) to (4): (1) the conjugated diene polymer has two or more peaks in a molecular weight distribution curve obtained by measurement with gel permeation chromatography (GPC); (2) the molecular weight distribution curve contains a peak (A) having a peak molecular weight of 500,000 to 2,500,000 and a peak (B) having a peak molecular weight of 150,000 to 600,000; (3) a total value of an area of the peak (A) and an area of the peak (B) is 70% or more of a total area of the molecular weight distribution curve; and (4) an absolute value of difference between a glass transition temperature of a conjugated diene polymer in the peak (A) (Tg (A)) and a glass transition temperature of a conjugated diene polymer in the peak (B) (Tg (B)) is 2° C. to 30° C.

The present invention provides a pneumatic tire that achieves a balanced improvement in fuel economy, wet grip performance, handling stability, abrasion resistance, fatigue resistance, and tensile strength. The present invention relates to a pneumatic tire including a tread formed from a rubber composition, the rubber composition having after vulcanization rubber properties satisfying certain values.

The invention relates to a tire having a rubber tread of a circumferentially zoned tread. The tread zones are comprised of three circumferential load bearing zones, with each zone containing a portion of the running surface of the tread, comprised of a silica-rich intermedial rubber zone positioned between and extending beneath two carbon black-rich lateral tread zones. The tread configuration contains an underlying carbon black-rich base rubber layer. The intermedial and stratified lateral zones are comprised of rubber compositions having differentiated rebound physical properties. A path of least electrical resistance extends from a lateral carbon black-rich rubber tread zone to the carbon black-rich tread base layer by an extension of a lateral tread zone or by an intermediate carbon black-rich rubber bridge.