Patent ID: 8304480

Claim:
A tire having a steel cord, wherein the steel cord is coated with a rubber composition comprising: 40 to 70 parts by weight of silica having a nitrogen adsorbing-specific surface area of 100 to 200 m 2 /g; 1 to 15 parts by weight of at least one silane coupling agent selected from the group consisting of bis(3-triethoxysilylpropyl)polysulfide, bis(2-triethoxysilylethyl)polysulfide, bis(3-trimethoxysilylpropyl)polysulfide, bis(2-trimethoxysilylethyl)polysulfide, bis(4-triethoxysilylbuyl)polysulfide, and bis(4-trimethoxysilylbutyl)polysulfide; 12 to 20 parts by weight of zinc oxide; 3.5 to 5 parts by weight of sulfur; and a cobalt salt of an organic acid in an amount of 0.05 to 0.3 parts by weight converted into the metal cobalt amount, on the basis of 100 parts by weight of a natural rubber, and carbon black is not contained in the rubber composition.