Bugatti Veyron-owning friend: a lightly used set of wheels and tires. What's the eBay "Buy it Now" price? Only $100,000. A steal, surely. The seller claims 85 percent of the tires' life remains.

Early on, railways primarily used wheels made of wood or iron ... The wheels serve as a good example of wheels and tires acting as a tuned part of a whole suspension system.