Nebraska tire was trying to get rid of some 7.50X20 for a long time. I think they finally got rid of all of them. 7.50x 20 became pretty much obsolete in the mid 1950's. Everyone simply replaced them with 8.25x20. 8.25x20 tires are available from several suppliers. But they are getting scarce too. Tire manufactures just don't have much interest in producing slow movers when they can't even supply the fast movers.
