I see what you are saying. But see where is says "Rim width" on that STA site? It says 6". Mine are over 6" wide. Does that mean these tires will fit a rim with a 6" minimum width? Is that the overall width, lip to lip or bead to bead?

I am about 80% sure they will work, but I would like to be 100% before dropping $800. When I spoke with the dealer they started throwing out things like; "it has to have a minimum of 5.5" between the beads". I will send the dealer the photo and make him guarantee they'll fit!