Patent ID: 7732522

Claim:
A tire sidewall comprising, based on 100 parts by weight rubber (phr): (A) elastomers comprised of: (1) from 35 to 45 phr of cis-1,4-polyisoprene natural rubber; and (2) from 55 to 65 phr of cis-polybutadiene rubber; (B) from 32 to less than 55 phr of reinforcing filler comprised of: (1) from greater than 30 phr to 50 phr of carbon black; and (2) from 2 to less than 10 phr of silica; and (C) from 0.4 to 1.2 phr of a silane coupling agent, wherein the amount of the silane coupling agent is from 8% to 24% by weight of the silica.