Patent ID: 9650503
Date: 2017-05-16
CPC Classifications: B60C,C08K,C08L

Claim:
1. A pneumatic tire having a circumferential rubber tread of a rubber composition comprised of, based on parts by weight per 100 parts by weight elastomer (phr): (A) diene-based elastomers comprised of; (B) about 50 to about 250 phr of rubber reinforcing filler comprised of a combination of precipitated silica and rubber reinforcing carbon black in a ratio of precipitated silica to rubber reinforcing carbon black of at least 9/1, together with silica coupling agent having a moiety reactive with hydroxyl groups on said precipitated silica and another different moiety interactive with said diene-based elastomers and polymer, (C) about 5 to about 45 phr of resin comprised of styrene-alphamethylstyrene resin having a softening point (ASTM E28) in a range of from about 60° C. to about 125° C., and (D) about 5 to about 50 phr of vegetable triglyceride oil.