| 摘要 |
A tire has a cross-ply carcass composed of rubberized plies of organic fibre, e.g. nylon, cords with a thickness of 1,890 d/3-1,890 d/2, the rubber interposed between the superposed cords having a thickness such that hm/ho</=0.5 where hm is the average rubber thickness between the superposed cords at the mid-circumferential plane of the tire and ho is the diameter of the cords, the rubber being prepared by compounding at least one rubber selected from natural rubber and diene synthetic rubbers, a softener, an organic vulcanization accelerator, sulfur, and at least 30% by weight of a carbon black having an average iodine adsorption value of 40-90 mg/g and an average dibutyl phthalate absorption value of 60-140 ml/100 g,the rubber having after vulcanization a dynamic modulus of elasticity at 100 DEG C under 2% elongation of not less than 6.0 x 10<7> dyne/cm<2>, a dynamic loss angle of not more than 0.095 and a tensile strength of not less than 100 kg/cm<2>. |
