10X22.5 tires will run right along side of a 9x20 tube required tire which was a very common tire for your size truck back in its day. And it will work just fine. Whoever is telling you stuff i reading thing out of a book and never experienced it in real life. However, asE as EdPruss stated make sure they are10 on 7.25 bolt circle. If they are 10 on 8.75 they are worth srap iron price and the disposal fee of the tire will be more than the worth of the wheel. Whoever is blowing smoke up your chimney about the width may be doing the ame thing about the bolt cirfle
