A pneumatic tire of the present disclosure includes: a pair of bead cores embedded in a pair of bead portions, the pair of bead cores each including a pair of small bead cores divided in a tire width direction; and a carcass including one or more carcass plies, the carcass toroidally straddling between the pair of bead cores with end portions of the carcass each sandwiched between the pair of small bead cores and engaged with the small bead cores, in which a sound control body is disposed on an inner surface of the tire in the pair of bead portions.

A tire with intrinsic splice-free cellular noise damper comprising a supporting tire carcass having one or more layers of ply, an outer circumferential tread, and a radially inner layer, a pair of beads, sidewalls extending radially inward from the axial outer edges of a tread portion to join the respective beads, an intrinsic cellular noise damper as the innermost layer attached to innerliner, wherein said noise damper has a density less than 1.3 g/cm3.

A pneumatic tire can include a tread portion, a sealant layer on a tire inner cavity surface in the tread portion, a porous sound damper inward of the sealant layer in a tire radial direction, and a barrier portion between the sealant layer and the sound damper. A strength of the barrier portion can be 2 to 25 (N).

The disclosure relates to a road noise reducing system including a wheel rim having a barrel, a first layer of acoustic metamaterial with a first plurality of open cells mounted on the barrel, and, optionally, a second layer of acoustic metamaterial with a second plurality of open cells in contact with the first layer of acoustic metamaterial. The system optionally includes a pneumatic tire with a hollow, wherein the tire is mounted on the wheel rim such that the hollow forms a closed cavity and can incorporate additional elements including an elastomeric membrane, a noise-absorbing foam, and/or a resonator. The system has a sound transmission loss of at least 20-35 dB at frequencies of 50 Hz to 2,000 Hz and can reduce tire-road interaction noise by at least 50-70%. Also disclosed are methods of making road noise reducing wheel and tire assemblies, automobiles incorporating the same, and methods for reducing tire-road interaction noise.

Apparatus for applying noise-reducing elements to a tyre for vehicle wheels that has a radially inner surface with a service area and a circumferential dimension. The apparatus determines the position in circumferential direction of the service area, determines the position in circumferential direction of a target area on the radially inner surface of the tyre based on the position in circumferential direction of the service area, and applies a noise-reducing element the target area. The position in circumferential direction of the service area is determined by circumferentially inspecting the radially inner surface of the tyre starting from a reference position, detecting the angular position of the service area with respect to the reference position and determining the position in circumferential direction of the service area based on the angular position and on the circumferential dimension of the radially inner surface of the tyre.

The present disclosure is directed to a tyre comprising a tread band having one or more reliefs with circumferential development, and a noise-reducing element applied on an inner surface of the tyre and extending along at least half of a circumferential development of the inner surface, wherein the noise-reducing element comprises a series of radially through openings, wherein the series of openings extends along the circumferential development of the inner surface and wherein the series of openings is placed so that at least half of an overall plant area of the openings of the series of openings is placed at one relief of the one or more reliefs.

A vehicle wheel includes: a rim including a well portion and a guide member; and a sub-air chamber member serving as a Helmholtz resonator. The well portion has an outer circumferential surface extending in a wheel circumferential direction of the vehicle wheel. The guide member engages with the sub-air chamber member to guide the sub-air chamber member on the outer circumferential surface in the wheel circumferential direction, thereby to attach the sub-air chamber member to the rim.

A pneumatic tire includes: a tire main body; and at least one sound damper. The sound damper is made of a foam material having a plate shape, a size of one surface of the foam material in a longitudinal direction being smaller than that of the other surface. The sound damper is formed by affixing the foam material to a tire inner cavity surface to form a ring shape, with the other surface of the foam material being toward an outer circumference, and end faces of the foam material in the longitudinal direction abut each other and are bonded.

A wheel structure for a vehicle includes: a rim, and a resonator including a plurality of resonance tubes attached along an outer peripheral surface of the rim. The plurality of resonance tubes are spaced apart from each other and connected along the outer peripheral surface of the rim by a plurality of strips, and an end of each of the strips is coupled to a corresponding end of each of the resonance tubes.

The invention relates to a tire comprising a circumferential tread having an outer tread surface and an inner innerliner surface; at least two spaced-apart beads; sidewall portions extending between the tread and the beads; and a belt-like foam noise damper having first and second terminal ends, wherein the noise damper lines the innerliner surface; wherein the noise damper is secured to the innerliner surface via an adhesive situated between the noise damper and the innerliner, wherein the terminal ends of the noise damper are cut at an angle of less than 90 degrees, overlap each other, and the overlapped second terminal end of the foam is joined to the first terminal end by the adhesive present underneath the second terminal end, and wherein the adhesive has weight in the range of 30 to 800 grams per square meter of foam surface.