A coupled polymer product comprising: polymer with up to a total of 5 polymer chains bonded directly to either a functionalizing compound of formula or formula wherein formula is as follows: NC-(Q 1)Si(X 1)(X 2)(X 3) wherein Q is divalent and selected from C 1 -C 12 divalent alkylene moieties or aromatic moieties, each X is a leaving group independently selected from halogens and alkoxy of OR 6 wherein each R 6 is independently selected from C 1 -C 12 aliphatic hydrocarbyl (preferably ethyl or methyl), and formula is as follows: acid anhydride-(Q 2)(Q 3)Si(X 4)(X 5)(X 6) wherein Q 2 comprises at least two methylene groups bonded together and forming a cyclic acid anhydride for formula, wherein Q 3 is divalent and selected from C 1 -C 12 alkylene moieties or aromatic moieties, each X is a leaving group independently selected from halogens and alkoxy of OR 7 wherein each R 7 is independently selected from C 1 -C 12 aliphatic hydrocarbyl (preferably ethyl or methyl), wherein the polymer chains comprise (a) at least one conjugated diene monomer optionally in combination with at least one vinyl aromatic monomer, and (b) at least one vinyl group-functionalized silane compound of formula bonded within the polymer chain via its vinyl group, wherein formula is as follows: (H 2 C=CH)- -Si(R 1)(R 2)(R 3) where A is divalent and selected from C 6 -C 20 aromatic hydrocarbons optionally substituted with an aliphatic alkylene moiety to which the Si is bonded, each of R 1, R 2, and R 3 are independently selected from linear or branched C 1 -C 12 hydrocarbyl and -N(R 4)(R 5), with at least one of R 1, R 2 and R 3 selected from -N(R 4)(R 5), wherein each R 4 and R 5 are independently selected from aliphatic hydrocarbyl of C 1 -C 12 or aromatic hydrocarbyl of C 6 -C 18, with R 4 and R 5 optionally bonded together into a ring, and R 1 and R 2 are optionally bonded together into a ring comprising two nitrogen atoms, wherein the average number of vinyl group-functionalized aminosilane compound of formula per polymer chain is 0.1:1 to 3:1, and up to 3 polymer chains are bonded to the Si of each compound of formula or. polymer with up to a total of 5 polymer chains bonded directly to either a functionalizing compound of formula or formula wherein formula is as follows: NC-(Q 1)Si(X 1)(X 2)(X 3) wherein Q is divalent and selected from C 1 -C 12 divalent alkylene moieties or aromatic moieties, each X is a leaving group independently selected from halogens and alkoxy of OR 6 wherein each R 6 is independently selected from C 1 -C 12 aliphatic hydrocarbyl (preferably ethyl or methyl), and formula is as follows: acid anhydride-(Q 2)(Q 3)Si(X 4)(X 5)(X 6) wherein Q 2 comprises at least two methylene groups bonded together and forming a cyclic acid anhydride for formula, wherein Q 3 is divalent and selected from C 1 -C 12 alkylene moieties or aromatic moieties, each X is a leaving group independently selected from halogens and alkoxy of OR 7 wherein each R 7 is independently selected from C 1 -C 12 aliphatic hydrocarbyl (preferably ethyl or methyl), wherein the polymer chains comprise (a) at least one conjugated diene monomer optionally in combination with at least one vinyl aromatic monomer, and (b) at least one vinyl group-functionalized silane compound of formula bonded within the polymer chain via its vinyl group, wherein formula is as follows: (H 2 C=CH)- -Si(R 1)(R 2)(R 3) where A is divalent and selected from C 6 -C 20 aromatic hydrocarbons optionally substituted with an aliphatic alkylene moiety to which the Si is bonded, each of R 1, R 2, and R 3 are independently selected from linear or branched C 1 -C 12 hydrocarbyl and -N(R 4)(R 5), with at least one of R 1, R 2 and R 3 selected from -N(R 4)(R 5), wherein each R 4 and R 5 are independently selected from aliphatic hydrocarbyl of C 1 -C 12 or aromatic hydrocarbyl of C 6 -C 18, with R 4 and R 5 optionally bonded together into a ring, and R 1 and R 2 are optionally bonded together into a ring comprising two nitrogen atoms, wherein the average number of vinyl group-functionalized aminosilane compound of formula per polymer chain is 0.1:1 to 3:1, and up to 3 polymer chains are bonded to the Si of each compound of formula or.