The run flat tire according to this disclosure comprises a tread portion, sidewall portions, bead portions, a side-reinforcing rubber having a crescent-shaped cross section, and a carcass. A part of the side-reinforcing rubber is a low elastic portion with...

A run flat tire is provided on the inside of the carcass in the sidewall portion with a crescent-shaped reinforcing rubber having an axially outside part and an axially inside part each composed of a number of spiral windings of a narrow-width rubber strip...

A pneumatic tire comprising a sidewall insert is disclosed. The sidewall insert (12) comprises an axially layered thermoplastic (22). Preferably, the tire is a runflat tire (1). Also, a method of manufacturing such a tire is disclosed.

Crown-stiffening underlay structure (238) for a radial ply pneumatic tire (200) comprised of a flat strip (240) of elastomeric material (244) reinforced with essentially inextensible cords (242). The cord-reinforced flat strip (240) is wrapped helically ar...