A pneumatic tire includes a tread portion provided with a pair of shoulder main grooves and at least one crown main groove between the shoulder main grooves to define a pair of middle portions between the adjacent shoulder main groove and crown main groove. The middle portions are provided with inner middle lug grooves and outer middle lug grooves. Each outer middle lug groove extends from the shoulder main groove to its axially inner end while decreasing its groove width. The outer middle lug groove are arranged with alternately arranged first pitches and second pitches, wherein the second pitches are larger than the first pitches. Each inner middle lug groove extends from the crown main groove to its axially outer end while decreasing its groove width. The inner middle lug grooves are arranged with substantially the same pitches.

Provided is a non-pneumatic tire having excellent durability performance. This non-pneumatic tire is provided with an annular tread portion which contacts the road surface, an annular inner peripheral portion which is positioned radially inward of the tread portion, and multiple linking units which join the tread portion and the inner peripheral portion. The tread portion includes a first portion which contacts the road surface, and a second portion which includes an inner peripheral surface facing the inner peripheral portion. The thermal conductivity of the second portion is greater than that of the first portion.

A non-pneumatic tire has high durability performance. A non-pneumatic tire is provided with: an annular tread section (2) which comes into contact with the road surface; an annular inner peripheral section (3) which is located on the inside of the tread section (2) in the radial direction of the tire; and a plurality of connection sections (4) which connect the tread section (2) and the inner peripheral section (3). The connection sections (4), the inner surface (2b) of the tread section (2), and/or the outer surface (3a) of the inner peripheral section (3) is provided with a plurality of dimples (5).

Für einen Rad-Körper, insbesondere zur Verwendung als Felge für einen Bandagen-Reifen, umfassend: einen sich koaxial zu einer Rad-Körper-Achse erstreckenden zylindrischen Außenringabschnitt (18), der auf einer radialen Außenseite eine Lauffläche oder eine Tragfläche zum Tragen eines Reifens, insbesondere eines Bandagen-Reifens (12), aufweist; einen mit dem Außenringabschnitt (18) verbundenen, sich von dem Außenringabschnitt nach radial innen erstreckenden Tragstegabschnitt (20), über den der Außenringabschnitt mit einer Radhalterung (22) verbindbar ist; und eine den Außenringabschnitt (18) mit zumindest einer axialen Seite des Tragstegabschnitts (20) verbindende Stützanordnung (40, 42), wird vorgeschlagen, dass die Stützanordnung (40, 42) einen sich koaxial zu der Rad-Körper-Achse radial innerhalb des Außenringabschnitt (18) erstreckenden Innenringabschnitt (40) aufweist, der einerseits direkt oder indirekt in radialem Abstand von dem Außenringabschnitt (18) mit dem Tragstegabschnitt (20) verbunden ist und andererseits direkt oder indirekt in axialem Abstand von dem Tragstegabschnitt (20) mit einer radialen Innenseite des Außenringabschnitts (18) verbunden ist.

A wheel assembly (22) includes a rigid wheel (30) and an airless flexible tire (32) with certain performance characteristics of a pneumatic tire. The rigid wheel (30) includes a central portion and a plurality of circumferentially spaced mounting elements removably attached to a radially outer margin of the central portion. The tire (32) is mounted on the wheel (30) and engages the mounting elements such that portions of the tire not engaging the mounting elements are separated radially from the wheel (60) by a space. The tire is configured such that portions of the tire not engaging the mounting elements flex inwardly toward the wheel when subject to ground engaging pressure, thereby minimizing ground penetration and soil disruption. The tire may include one or more tension elements embedded in the tire to increase the tire's strength and resilience.

A vehicle wheel for preventing defective assembling, slipping, misaligned rim, and damages caused by these inconveniences is provided. The vehicle wheel comprises a rim (8) on which a tire base (1) comprising a tread rubber layer (4) and a base rubber layer (2) where bead cores (6) are arranged is mounted. The rim (8) is provided with a rim flange (10) on one side face and with a recess (16) on the other side face. The tire base (1) is provided with a protrusion (20) to be fitted to the recess (16). A height D of the base rubber layer (2) is set to be 20-70% of a tire height H. The base rubber layer (2) has a tensile stress of 1.5-5 MPa at 10% elongation in JIS-K6251: Dumbbell type NO. 1 shape for vulcanized rubber tension test method, and a hardness of A70-100 degrees in JIS-K6253: Type A durometer hardness test.

A solid rubber tyre for vehicle wheels is realized to comprises an annular band (1) made of a deformable material - rubber, in particular, into which there is embedded a ribbon-like element (5) formed in such a way as to have its generatrices substantially parallel to the axis of said band, and in such a way as to separate internally, the layers (6) of deformable material having a thickness (s)- measured in the radial direction, that is lesser than 80% the minimum width (1) of the band itself - measured in the direction of said axis; said ribbon-like element (5) having a thickness (s') lesser than 20% the said layers' thickness s, with presenting (when the ribbon-like element is disposed in a substantially plane configuration) a modulus of elasticity- at least in a direction contained on the plane of the said configuration, that is at least greater than ten times the modulus of elasticity of the deformable material.

A solid rubber tyre for vehicle wheels is realized to comprises an annular band (1) made of a deformable material - rubber, in particular, into which there is embedded a ribbon-like element (5) formed in such a way as to have its generatrices substantially parallel to the axis of said band, and in such a way as to separate internally, the layers (6) of deformable material having a thickness (s)- measured in the radial direction, that is lesser than 80% the minimum width (1) of the band itself - measured in the direction of said axis; said ribbon-like element (5) having a thickness (s') lesser than 20% the said layers' thickness s, with presenting (when the ribbon-like element is disposed in a substantially plane configuration) a modulus of elasticity- at least in a direction contained on the plane of the said configuration, that is at least greater than ten times the modulus of elasticity of the deformable material.

A vehicular pneumatic tire which, except for bead cores (14;15) is composed solely of an elastomer blend strengthened by molecular orientation. The blend is a monoolefin copolymer rubber with a polyolefin and sufficient curing agents to effect vulcanization when the blend is subjected to heat and pressure. The process for making the tire comprises preforming an annulus of the elastomeric blend with bead cores (14,15) adjacent the edges, the diameter of the preform (10) being essentially that of the bead diameter of the completed tire and the axial distance between the beads less than the transverse arcuate dimension of the completed tire. The preform (10) is cured and while still hot following curing, is stretched and shaped to final size and the generally toroidal form characteristic of conventional pneumatic tires with resulting biaxial molecular orientation, which orientation is retained in the tire by cooling it below the melting point of the polyolefin before removing the tire from the mold.