In a state in which a pneumatic tire is mounted on a specified rim, inflated to 92% of a specified internal pressure, and loaded with a load of 75% of the maximum load capacity, an average thickness of an undertread rubber is smaller in a center region than in a shoulder region, a ratio (CAO/UAO) is 0.15 or more and 0.95 or less, a ratio (UAI/UAO) is less than 1, and a ratio (L/W) is 0.29 or more and 0.51 or less, in a tire meridian cross-sectional view, where CAO, UAO and UAI are cross-sectional areas of the cap tread rubber, the undertread rubber, and the undertread rubber in the center region, respectively, L is a tire width direction dimension from a defined intersection point to a ground contact edge, and W is a tire width direction dimension of each shoulder region.

A tire includes a tread having a shoulder region, a shoulder transverse groove being fixedly set in the shoulder region, and a shoulder block row configured by aligning the shoulder blocks in a tire-circumferential direction, in which the shoulder transverse groove has an angle formed by a groove wall and a vertical line drawn from a groove opening end position to a tread surface of the shoulder block within a range of 10 to 20 degrees, and the groove wall and groove bottom are connected by a concave surface with a radius of curvature of at least 6 mm and no more than 15 mm.

A tire/wheel assembly of the present disclosure includes a tire with a tread portion and a wheel with a rim. The tire is mounted on the rim, and the tire/wheel assembly includes a power reception coil. In the contact patch when the tire/wheel assembly is filled to a prescribed internal pressure and subjected to the maximum load, the rectangle ratio of the ground contact length at a position, in the tire width direction, located 10% of the ground contact width inward in the tread width direction from an edge in the tire width direction to the ground contact length at the center of the contact patch in the tire width direction is 50% or more.

A tire includes first through fourth chamfered portions where tire width direction dimensions change in a tire circumferential direction formed along respective vehicle mounting outer edges of first through fourth circumferential main grooves. A second inclined groove adjacent to a vehicle mounting outermost position of the second chamfered portion is formed. A third inclined groove adjacent to a vehicle mounting outermost position of the third chamfered portion is formed. At least one circumferential narrow groove extending in the tire circumferential direction is formed in at least one of a first land portion and a second land portion.

Tread (2) of a radial tire for a heavy vehicle. The tire alternatingly rolls in laden and unladen states on descent and ascent, respectively. Tread (2) has total width W.sub.T and comprises first median portion (21) having median width W.sub.c, where 0.2W.sub.T≤W.sub.c≤0.5W.sub.T. Tread (2) is axially delimited by second and third lateral portions (22, 23) having respective lateral widths (W.sub.S2, W.sub.S3) at least equal to 25% and at most equal to 40% of total width W.sub.T. Angle A.sub.51 of leading face (51) of every element in relief (31) of first median portion (21) is strictly greater than angle A.sub.61 of trailing face (61) of said element in relief (31). Angle (A.sub.52, A.sub.53) of leading face (52, 53) of every element in relief (32, 33) of each of the second and third lateral portions (22, 23) is strictly less than angle (A.sub.62, A.sub.63) of trailing face (62, 63) of said element in relief (32, 33).

A tread pattern of a pneumatic tire includes an inner circumferential main groove and an outer circumferential main groove that have groove walls extending in a tire circumferential direction while the angle of the groove walls relative to a contact surface varies with a predetermined amplitude, an inner lug groove extending from the inner circumferential main groove toward the outer circumferential main groove, an outer lug groove extending from the outer circumferential main groove toward the inner circumferential main groove, and a sipe configured to communicate the inner lug groove with the outer lug groove. A pair of chamfered surfaces are provided on walls of the sipe along an extension direction of the sipe on the contact surface.

A tire for running on rough terrain for which an intended tire rotational direction is specified. The tread portion is provided with blocks raised from a tread base portion. Each block has a first side wall surface comprising a radially outer portion extending substantially straight and radially inwardly, while inclining toward the toe side in the intended tire rotational direction, and a radially inner portion extending from the radially outer portion to the tread base portion while curving in an arc shape. The radially outer portion has a radial length of from 30% to 70% of a radial height of the block.

A pneumatic vehicle type for passenger vehicles or vans having at least one wide circumferential groove (1, 1′, 1″, 1″′), which runs in the circumferential direction and is bounded on the tread periphery by two edge borders (1a, 1′a, 1″a, 1′″a) which run parallel to one another and linearly, and has a groove base (13, 13′, 13″) as well as two groove edges (9, 10, 9′, 10′, 9″, 10″), wherein elements (11, 12, 11′12′, 11″, 12″) which project on the groove edges (9, 10, 9′, 10′, 9″, 10″) are formed alternately in the circumferential direction on one or other of the groove edges (9, 10, 9′, 10′, 9″, 10″), wherein each projecting element (11, 12, 11′, 12′, 11″, 12″) has a groove edge section (9a, 10a, 9′a, 10′a, 9″a, 10″a) lying opposite on the opposite groove edge (9, 10, 9′, 10′, 9″, 10″), which groove edge section (9a, 10a, 9′a, 10′a, 9″a, 10″a) runs least essentially in the radial direction starting at the edge border (1a, 1′a, 1″a, 1′″a) as far as the groove base (13, 13′, 13″), wherein the groove base (13, 13′, 13″) runs in a meandering or corrugated shape along and between the projecting elements (11, 12, 11′, 12′, 11″, 12″), wherein the projecting elements (11, 12, 11′, 12′, 11″, 12″) are essentially of wedge-like design and are bounded by oblique faces (14, 14′, 14″) which extend in the axial direction as far as the groove base (13, 13′, 13″) and run in the circumferential direction at least essentially over the circumferential extent of the elements (11, 12, 11′, 12′, 11″, 12″), wherein the projecting elements (11, 12; 11′,12′,11″,12″) are provided in at least two different circumferential lengths (L.sub.1 to L.sub.5, L.sub.1′ to L.sub.5′; L.sub.1″ to L.sub.5″) and follow one another according to a specific sequence over the circumference of the circumferential groove (1, 1′, 1″, 1″′).

A tire includes an annular tread portion including a first circumferentially extending asymmetric shoulder groove having an angled axially inner sidewall with an axially inner sidewall radial angle between 170° and 180°, an angled axially outer sidewall with an axially outer sidewall radial angle between 155° and 170°, and a curved base surface with a radius of curvature ranging from 40.0 mm at an axially inner edge and 20.0 mm at an axially outer edge.

A heavy-duty tire includes a tread part formed such that the tread part includes a crown profile including tire equator, and a pair of shoulder profiles extending from outer sides of the crown profile to tread edges. In a tire cross section including tire rotation axis in 5% internal pressure state in which the tire is mounted to a normal rim, filled with air at internal pressure of 5% of normal internal pressure and loaded with no load, each of the crown and shoulder profiles has an arc shape convex toward tire radial direction outer side such that ratio Rc/Rs of curvature radius Re of the crown profile to curvature radius Rs of each shoulder profile is 7.0 or more, and a tire axial direction distance from the equator to a connecting point between the crown profile and each shoulder profile is 0.70 or more times a tread half width.