Patent ID: 8119721

Claim:
A winter tire comprising a tread produced from a rubber composition, said rubber composition comprising: a diene rubber containing, in a total amount of 80% by mass or more, natural rubber and polybutadiene rubber; silica in an amount of 10 to 150 parts by mass per 100 parts by mass of the diene rubber; and carbon black in an amount of 3 to 50 parts by mass per 100 parts by mass of the diene rubber, the diene rubber containing 35 to 80% by mass of the natural rubber, the diene rubber containing 10% by mass or more of a polybutadiene rubber modified by a compound represented by the formula (1): wherein R 1 , R 2 and R 3 are the same or different and are independently an alkyl group, an alkoxy group, a silyloxy group, an acetal group, a carboxyl group, a mercapto group, or a derivative thereof; R 4 and R 5 are the same or different and are independently a hydrogen atom or an alkyl group; and n is an integer.