Patent ID: 7533708

Claim:
A two piece pneumatic tire comprising a carcass and a removable tread belt disposed radially about the periphery of the carcass, the tread belt and carcass meeting at an interface between a radially outermost surface of the carcass and a radially innermost surface of the tread belt, the radially outermost surface of the carcass and the radially innermost surface of the tread belt extending axially between two shoulders, wherein the radially outermost surface of the carcass comprises a self lubricating rubber composition, the self lubricating rubber composition comprising at least one rubber and from 1 to 50 phr of at least one amide of formula III wherein R 1 is selected from C 12 -C 36 alkyl, C 12 -C 36 alkenyl, or C 12 -C 36 alkadienyl; wherein the self-lubricating rubber composition is disposed axially proximate to a shoulder of the tire and is excluded from the radially outermost surface of the carcass axially distal to both shoulders.