Passionate about cars, mountain bikes, or motorcycles almost as much as you are about your significant other? Prove it with a tire ring. Ranging anywhere from $64.60 for a .925 silver bike tire to $5071.84 for a platinum car tire, these rings are sure to be unique. If you wanted to ride up to your wedding on a motorcycle, take your vows trials bike style, and then ride off into the sunset in your customized Porsche race car, then complete the theme and exchange a set of tire rings to seal that motor powered holy matrimony for eternity. Plus, they should make good eBay material if you “tire” of the marriage (that was bad, but it had to be done).