Abstract: A pneumatic tire may include a tread, an inner tire surface positioned opposite the tread, and an internal heat exchanger attached to the inner tire surface. The wheel assembly may include a wheel rim, the pneumatic tire, and a pump. The pneumatic tire may be attached to the wheel rim. The pump may be attached to the wheel rim outside of the pneumatic tire and configured to rotate with the wheel rim. The pump may be coupled to the internal heat exchanger through an opening in the wheel rim. The wheel assembly may further include a coolant disposed in the internal heat exchanger and configured to absorb heat from the pneumatic tire. The wheel assembly may also include an external heat exchanger configured to remove heat from the coolant.

Abstract: A pneumatic tire includes a tread development width TDW in a tread portion and a tire maximum width SW which satisfy 0.70?TDW/SW?0.75. A profile line forming an outer surface of a sidewall portion in a tire meridian cross-section includes at least three arcs having mutually different radii of curvature. In the profile line, a radius of curvature R1 of an arc from a first point to a second point, a radius of curvature R2 of an arc from the second point to a tire maximum width position, and a radius of curvature R3 of an arc forming a portion on an inner side in the tire radial direction from the tire maximum width position satisfy R1>R2>R3. A height SDH in the tire radial direction from a bead heel to the tire maximum width position and a tire cross-sectional height SH satisfy 0.47?SDH/SH?0.50.

Abstract: A tire comprises a tread portion axially divided by circumferential grooves into a first middle land portion, a crown land portion and a second middle land portion. Each land portion has a profile protruding radially outwardly from a reference tread profile. The maximum protrusion amount of the second middle land portion's profile is larger than the maximum protrusion amount of the crown land portion's profile which is larger than the maximum protrusion amount of the first middle land portion's profile.

Abstract: A tire includes a tread portion 2. At least one middle lateral groove 10 includes first and second middle tie bars 16 and 17. First and second middle sipes 21 and 22 are provided on a ground-contact surface 15s of at least one middle block 15. The first middle sipe 21 includes a termination end 21a located on an inner side in a tire axial direction with respect to the first middle tie bar 16. The second middle sipe 22 includes a termination end 22a located on an outer side in the tire axial direction with respect to the second middle tie bar 17 and on the inner side in the tire axial direction with respect to the termination end 21a of the first middle sipe 21. On the ground-contact surface 15s of the middle block 15, no groove and no sipe are provided in a first region 23.

Abstract: A first belt cord made of organic fibers of a spirally wound belt layer extends at an angle of equal to or less than 5° relative to a tire equatorial plane, a second belt cord made of organic fibers of a zigzag belt layer extends at an inclination of an angle of 2° to 45° relative to the tire equatorial plane, to folding back points where the second belt cord is folded back at each width directional end edge of the zigzag belt layer, and a relation of N95>N50 is satisfied. N50 is the number of stacked belt layers of the spirally wound belt layers, at 50% of half the length of a maximum belt width of belt layers from the tire equatorial plane. N95 is the number of stacked belt layers of the spirally wound belt layers, at 95% of half the length of the maximum belt.

Abstract: A tire 2 includes a reinforcing layer 20 located between a tread 4 and a carcass 12. The reinforcing layer 20 includes a band 38 and a belt 40. The band 38 includes a full band 42 and a pair of edge bands 44. The full band 42 has an end 42e located axially outward of a shoulder circumferential groove 28s. The belt 40 includes a third belt ply 46C located radially inward of the pair of edge bands 44. A distance Y between each edge band 44 and the full band 42 or the third belt ply 46C is not less than 2.2 mm and not greater than 4.0 mm. A ratio of a tire thickness E at an end PE of a tread surface 22 to a tire thickness D at an equator plane is not less than 1.2 and not greater than 2.0.

Abstract: A two-wheeled vehicle tire achieves a further improvement particularly in the traction performance during turning on soft ground. A two-wheeled vehicle tire includes a tread portion formed in an annular shape. The tread portion includes: center land portions arranged on a tire equator CL; middle land portions arranged on the tire width-direction outer side of the center land portions; and shoulder land portions arranged on the tire width-direction outer side of the middle land portions, and T-shaped or Y-shaped land portions each constituted by three partial land portions connected at one end are arranged between the center land portions and the shoulder land portions.

Abstract: Provided is a 5-rib tire that can have improved steering stability and noise performance A tread portion 2 includes four circumferential grooves 3 and five land portions 4. Two tread ends are ends of a 50%-load ground-contact surface. Each of the five land portions 4 is provided with no groove having a groove width greater than 2.0 mm, and is provided with only sipes 9. The five land portions 4 include a shoulder land portion 11. The shoulder land portion 11 is provided with a plurality of shoulder sipes 20. At least one of the shoulder sipes 20 includes an inclined portion 21 and an axial portion 22. The axial portion 22 cross the tread end.

Abstract: An expanding tire rim comprises an inner hub in hydraulic communication with a plurality of arms having curved outer rim sections. When activated by a user the hydraulic system permits the diameter of the outer rim to expand. Each arm has a plurality of tire retaining spikes.

Abstract: A tread portion 2 includes four circumferential grooves 3 and five land portions 4. Each of the five land portions 4 is provided with no groove having a groove width greater than 2.0 mm, and is provided with only sipes 9. The four circumferential grooves 3 include a shoulder circumferential groove 5. The five land portions 4 include a shoulder land portion 11 and a middle land portion 13. The middle land portion 13 is provided with a plurality of middle sipes 30. The shoulder land portion 11 is provided with a plurality of shoulder sipes 20 each extending from the shoulder circumferential groove 5 to a position beyond a tread end. At least one of the shoulder sipes 20 includes an inclined portion 21. A maximum angle of the inclined portion 21 with respect to a tire axial direction is not greater than a maximum angle of the middle sipe 30 with respect to the tire axial direction.

Abstract: A tire includes a tread portion including a first tread edge, a first shoulder circumferential groove, and a first shoulder land portion demarcated by the first shoulder circumferential groove to include the first tread edge. The first shoulder land portion is provided with first shoulder lateral grooves extending from the first shoulder circumferential groove to the first tread edge. One of the first shoulder lateral grooves includes first and second groove walls which face each other, and a tie-bar. The tie-bar includes an outer surface extending along a ground contact surface of the first shoulder land portion, the outer surface being connected to the first and second groove walls. The outer surface includes a first edge connected to the first groove wall, and a second edge connected to the second groove wall, the second edge having a length smaller than a length of the first edge.

Abstract: A tire insert for vehicle wheel which has an annular element made in one piece of polymer material is provided. The annular element has a base portion suitable for being accommodated in a rim seat of a rim and an enlarged portion having a section larger than the base portion. The enlarged portion is shaped to have shape and size to always be spaced apart from an inner tire side when the tire is inflated to a predetermined standard working pressure. When the tire is deflated, the enlarged portion comes into contact with the tire to support the tire while the vehicle wheel is running. A vehicle wheel having a tire, a rim onto which the tire is mounted, and the tire insert is also provided.

Abstract: A tire that includes a tread portion having a designated mounting direction to a vehicle can comprise: an outer shoulder land portion having a greatest width, in the tire axial direction, of a ground contact surface among five land portions. The outer shoulder land portion can include a plurality of outer shoulder sipes connected to an outer shoulder circumferential groove. An outer middle land portion can include a plurality of outer middle sipes extending completely across the outer middle land portion in the tire axial direction. The outer shoulder sipes and the outer middle sipes each can include a pair of sipe walls. The outer shoulder sipes and the outer middle sipes can each include a body portion in which the pair of sipe walls are disposed substantially parallel to each other. A width of a body portion of each outer shoulder sipe can be greater than a width of a body portion of each outer middle sipe.

Abstract: A non-pneumatic tire is provided that has a hub with a central axis. A supporting structure is located outward from the hub in a radial direction, and a shear band is located outward from the supporting structure in the radial direction. Tread is located outward from the shear band in the radial direction. A static discharge element extends from a first radial end of the supporting structure to a second radial end of the supporting structure. The first radial end is located closer to the central axis than the second radial end in the radial direction. The static discharge element is electrically conductive to conduct electricity through the supporting structure.

Abstract: A pneumatic tire includes a sidewall surface 10 having a profile surface formed in a curved surface shape and a decorative area 11 provided on the sidewall surface 10, in which a plurality of planes 19, 20 with a rhombus shape and a plurality of planes 21, 22 with a shape of part of a rhombus are tightly arranged in the decorative area 11 so that sides and vertices of the rhombuses correspond to one another, two planes 20, 21 and two planes 19, 22 in which perpendicular line directions are different are aligned in a tire radial direction, and vertices to be contact points between the two planes 20, 21 and between the two planes 19, 22 aligning in the tire radial direction are protruding vertices 23, 24 protruding in a normal line direction of the profile surface.

Abstract: A tire includes a circumferential direction groove and plural protrusions. The circumferential direction groove is formed in a tread face so as to open toward an outer side in a tire radial direction. The plural protrusions are formed so as to project to a projection height of from 0.1 mm to 1.0 mm from a groove bottom face or a groove side face of the circumferential direction groove, and are spaced apart by a spacing of from 0.1 mm to 1.0 mm. A center line MA, MB linking a center point of a leading end side with a center point of a base end side of each of the plural protrusions leans with respect to a perpendicular line HA, HB such that the leading end side of the protrusion is positioned further toward a tire rotation direction upstream side than the base end side of the protrusion when viewed along a tire width direction or the tire radial direction.

Abstract: An inflatable elastomeric inner tube having improved air retention properties. Such an inner tube may find use, for example, in a pneumatic tire of a bicycle, motorcycle, automobile or other vehicle.

Abstract: Center land portions of a tire each include a circumferential narrow groove extending in a tire circumferential direction, and a first lateral groove opening to one edge portion of each of the center land portions at one end and connecting to the circumferential narrow groove at the other end, and a second lateral groove opening to the other edge portion of the center land portion at one end and connecting to the circumferential narrow groove at the other end. Further, the circumferential narrow groove has a zigzag shape formed by repeatedly connecting a first long portion, a first short portion, a second long portion, and a second short portion. Furthermore, the first lateral groove connects to the first long portion of the circumferential narrow groove having the zigzag shape, and the second lateral groove connects to the second long portion of the circumferential narrow groove having the zigzag shape.

Abstract: A tire having a radial carcass reinforcement, made up of a single layer of reinforcing elements anchored in each of the beads by being turned up around a bead wire, reinforced by a stiffener.

Abstract: A tire includes a first land portion with a ground contacting surface provided with inclined sipes inclined in a first direction to the tire axial direction. The inclined sipes include first and second inclined sipes arranged adjacently in the tire circumferential direction. Each first inclined sipe includes a first deep-bottom portion located on a first circumferential edge side, and a first shallow-bottom portion located on a second circumferential edge side and having a smaller depth than the first deep-bottom portion. Each second inclined sipe includes a second deep-bottom portion located on the second circumferential edge side, and a second shallow-bottom portion located on the first circumferential edge side and having a smaller depth than the second deep-bottom portion. Each second deep-bottom portion is arranged so as to overlap a projection region in which a respective first deep-bottom portion is expanded parallel to the tire axial direction.