Thanks for the information. I bought a lot of 9Rx22.5 tires from a local school bus depot that were pre-mounted to this and some other styles of rims. I had them dismounted and put on a 1969 Chevy C50. The shop foreman didn't say what these were actually used on, but I gathered that it wasn't the school buses but instead some other type of road work/support equipment. I have no need for and was curious to which vehicles might still be using. As from what was mentioned above, if it is an option, it seems that most newer trucks/buses have switched to the wider rims to take advantage of the more common 11R and 12R tires.
