I got an extra set of wheels on e-bay. Keep them at my office and can have them fedxed to me. But, depending time of day and location if I have a problem will still have to wait a least one day. Better solution would be to just buy any 18 or 19' wheel that fits and replace it when you get home.

Thought about carrying one on the roof but doesn't look to good and messes up the aero. Just kidding