Cap tread rubber composition for cold weather tires

A cap tread rubber composition for cold weather tires,

• the cap tread rubber composition comprising:
• a rubber component including polybutadiene rubber, styrene butadiene rubber, and at least one of natural rubber or polyisoprene rubber;
• and
• a filler,
• the rubber composition having a combined amount of the natural rubber, the polyisoprene rubber, and the polybutadiene rubber of 80% by mass or more, an amount of the polybutadiene rubber of 30% by mass or more, and an amount of the styrene butadiene rubber of 0.3% to 10% by mass, each based on 100% by mass of the rubber component,
• the filler including 60% by mass or more of silica based on 100% by mass of the filler,
• the rubber composition comprising a fine particle silica having a nitrogen adsorption specific surface area of 190 m2/g or more in an amount of 50 parts by mass or more per 100 parts by mass of the rubber component.