I think my point is that John has a real slick little 9500 GMC which is a highway tractor. I doubt that he has the 8" wheels that are required for an 11.00x20 and I see no reason to put an off road tire on a highway tractor. I haven't used an open shoulder tire in many years simply because in our operation a closed shoulder tire delivers more mileage. I don't think the closed shoulder drivers like I use now had been invented 40 years ago or maybe I just couldn't afford them. I would not recommend buying a used old radial tire. As radials age, the belts separate from the bead. I have about a dozen storage trailers full of junk that I should get rid of. They all have 15 to 20 year old radials and ever so often one blows out from just sitting there. And the explosion can be pretty violent. We had one backed up to a chain link fence that tore up the fence when it blew. I'm not sure if any of the major manufacturers still make a 10.00R20. I have seen some Samson 10.00R20 drive tires at farm stores. I put 6 Samsons on a forklift about a year ago, and have had no problems. And they cost about 1/3 of a Goodyear. And they will probably get gouged sidewalls in our truck yard before anything else happens. The simple solution would be to get 8.25x22.5 wheels and put 11R22.5 tires on them that are still readily available.
