Abstract: A rubber composition suited for forming a truck tire tread includes 100 phr of elastomers, including a natural rubber and a styrene-butadiene rubber. A ratio by weight of natural rubber to styrene-butadiene rubber is at least 50:50. The composition further includes at least 45 phr of reinforcing fillers, including carbon black and a high surface area silica. The high surface area silica has a CTAB surface area of at least 220 m2/g. A ratio of the carbon black to the high surface area silica is at least 4:1. The composition further includes one or more processing aids and a sulfur-containing cure package.

Abstract: A rubber composition suited for forming a truck tire tread includes 100 phr of elastomers, including 100 phr of elastomers, including at least 50 phr natural rubber, at least 10 phr of butadiene rubber and at least 10 phr styrene-butadiene rubber. The rubber composition further includes at least 45 phr of reinforcing fillers, including carbon black and a high surface area silica. A ratio of the carbon black to the high surface area silica is at least 4:1. The high surface area silica has a CTAB surface area of at least 220 m2/g. The rubber composition further includes one or more processing aids and a sulfur-containing cure package including a vulcanizing agent and an ultra-accelerator.

Abstract: The present invention is directed a rubber composition for a truck tire, the rubber composition comprising 75 phr to 95 phr of polyisoprene, 5 phr to 25 phr of at least one diene based rubber selected from polybutadiene rubber and styrene butadiene rubber, and 40 phr to 70 phr of silica, wherein the silica has a BET surface area within a range of 260 m2/g and 350 m2/g. Furthermore, the present invention is directed to a truck tire comprising such a rubber composition and a truck with a respective tire.