Silica reinforced rubber composition and article of manufacture

This invention relates to a conjugated diene-based rubber composition reinforced with silica-based reinforcement together with a composite of carbon black supported non-silane coupling agent as 1-thioglycerol(3-mercapto-1,2-propanediol) and exclusive of 2,2'-benzothiazyl disulfide. The invention includes an article of manufacture, including a tire, having at least one component comprised of such rubber composition.