| abstract |
There is provided a rubber composition by which tires exhibiting superior rigidity in a wide temperature condition by keeping grip performance and abrasion resistance can be produced. A rubber composition comprising carbon black with a nitrogen adsorption specific area of 100 to 250 m 2 /g, an iodine adsorption amount of 110 to 200 mg/g and a ratio of a cetyltrimethylammonium bromide adsorption specific area to the iodine adsorption amount of 0.85 to 1.2 based on 100 parts by weight of rubber components containing 50 % by weight or more of a solution polymerization styrene-butadiene rubber having a weight average molecular weight of 500,000 to 2,500,000, 40 % by weight or less of a natural rubber and 40 % by weight or less of a polybutadiene rubber, and 50 to 120 parts by weight of a filler for reinforcement containing 10 to 100 parts by weight of silica and a resin based on 100 parts by weight of the rubber components. |