for what it's worth. FSM's of the era state maximum runout where the bead seats as : radial runout [up and down] - .035, lateral runout [side to side] - .045. with tire mounted : radial runout [measured at the center of the tread] - .080, lateral runout [measured at the sidewall] - .105.
sometimes it is necessary to rotate the tire on the rim to get the best results because the tire and rim both may pass standards, but when mated, are way off.