I have a 53 GMC with the RH-5 wheels. I have been looking for some replacements for quite some time. I have some located, but I don't have them yet. I am running the RH-5 wheels until I get the others and not particularly worrying about them. I would suggest you start looking for wheels now and changing them when you find some replacements. The RH-5 were very popular and the Goodyear type are not always easy to find.