Patent ID: 6602943
Filing Date: 2003-08-05
Classification: B60C,C08K

Abstract:
A heavy duty pneumatic tire comprising a tread made of a rubber composition comprising 20-67 parts by weight of carbon black and 3-20 parts by weight of silica based on 100 parts by weight of diene based rubber,wherein the carbon black has a ratio of dibutyl phthalate (DBP) absorption to 24M4DBP absorption (DBP absorption/24M4DBP absorption) of not less than 1.20 and not more than 1.30 and a ratio of DBP absorption to nitrogen absorption specific area (N2SA) of not less than 0.8 and the silica has a dibutyl phthalate (DBP) absorption of 200-260 ml/100 g and a nitrogen adsorption specific area (N2SA) of 210-260 m2/g.