What I have found is with the larger RVs - your tire is a specialized size. You might call your roadside assistance company and they can mobilize quickly, but they may not be able to find the correct tire. Also - if you do find a mount big enough - you can't access your engine on a diesel pusher. But then I saw a mount that was big enough and they ended up having contact info for it. You might check it out. You don't have to do the heavy work - just have the right tire with you. http://www.rvtiremount.com/
