Patent ID: 6932130

Claim:
A run flat tire wheel assembly having a flat run support formed by a ring-shaped metal shell and rubbery elastic members in a tire/rim cavity, wherein the bonding between the ring-shaped metal shell and the rubbery elastic members of the tire wheel assembly is improved by the rubbery elastic members composed of a rubber composition comprising 100 parts by weight of a diene-based rubber, 40 to 90 parts by weight of carbon black, 3 to 8 parts by weight of sulfur, 0.1 to 1 part by weight of an organic acid cobalt salt in terms of content of a cobalt element, 0.1 to 3 parts by weight of a phenylene diamine-based antioxidant and 1 to 6 parts by weight of a resol-type alkylphenol resin.