Finding anything in a 16.5 option will be tough. If needed, I'm taking off some 35in BFG all-terrains from my Excursion because their 16.5in wheels. Only have about 5-10kmi on them. Were on the rig when I bought them and will be going back to the factory wheels once I find a decent set. Hell, I'd trade straight across for just a good set of 16in wheels!