The present invention is directed to a pneumatic agricultural or industrial tire comprising a casing having at least one component reinforced with polyester cord having a polyepoxide disposed on a surface of said cord, a rubber tread disposed radially outwardly of the casing, the tread having an inner tread and a plurality of tread lugs projecting radially from the inner tread, wherein the polyester cord is formed by first obtaining a cord through twisting together a plurality of polyester yams, secondly treating the cord with an aqueous dispersion comprising a polyepoxide, and thirdly treating the cord with an aqueous RFL dispersion comprising a resorcinol-formaldehyde resin, a styrene-butadiene copolymer latex, a vinylpyridine-styrene-butadiene terpolymer latex, and a blocked isocyanate.