The invention is directed to an oil extended rubber and composition comprising:
a solution-polymerized elastomer derived from at least one conjugated diene monomer
and at least one vinyl aromatic monomer, the elastomer coupled with at least one
metal selected from the group consisting of silicon and tin; and from about 5 to
about 70 parts by weight, per 100 parts by weight of elastomer (phr), of a process
oil having a glass transition temperature of from about -80 C. to about -40
C., a polycyclic aromatic content of less than 3 percent by weight as determined
by the IP346 method, and an aromatic content of less than 20 percent by weight
as measured by ASTM D2140.