Thanks for all the input here! I think I will end up trying Kumho tires from the Tire Rack, I'm going to Jekyll Island next week for our annual trip and I'm driving right by a Tire Rack warehouse near Savannah. Tomorrow I plan on taking off one of my wheels to gauge if I can fit all four tires in the VX. If anything I should be able to fit at least 2-3 and that will reduce my shipping costs for whatever tire(s) remains. I also need to have SOME space left in the back for luggage. I don't think I would look good wearing an 18" tire as a bathing suit!!