Pneumatic tires

Claim 1

A pneumatic tire comprising a tread made from a rubber composition comprising 10-150 parts by weight of a silica filler, 0-150 parts by weight of carbon black and 0.2-10 parts by weight of at least one silane coupling agent represented by the following general formula: Y.sub.3 --Si--C.sub.n H.sub.2n A (I) wherein Y is an alkyl group or alkoxyl group having a carbon number of 1-4 or a chlorine atom, provided that the three Ys are the same or different, n is an integer of 1-6, and A is --S m C n H 2n Si--Y 3 group, --X group or SmZ group (in which X is a nitroso group, a mercapto group, an amino group, an epoxy group, a vinyl group, an imido group or a chlorine atom, Z is ##STR4## or ##STR5## group, each of m and n is an integer of 1-6 and Y is the same as defined above)), based on 100 parts by weight of a polymer or copolymer rubber or a rubber blend of not less than 30 parts by weight of the above polymer or copolymer and not more than 70 parts by weight of another diene series rubber, wherein said polymer or copolymer is a silane-modified polymer having a glass transition temperature of not lower than -50° C. and obtained by reacting an active terminal of a resulting living polymer through polymerization of 1,3-butadiene or copolymerization of 1,3-butadiene and styrene in an inert organic solvent, in the presence of an organic alkali metal initiator, with a silane compound represented by the following general formula: U.sub.i Si(OR).sub.j R'.sub.4-i-j (II) (wherein U is a halogen atom selected from chlorine, bromine and iodine, each of R and R' is an alkyl group, an aryl group, a vinyl group or a halogenated alkyl group each having a carbon number of 1-20, j is an integer of 1-4, i is an integer of 0-2 and a sum of i and j is 2-4).