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 â€œtireâ€ of the marriage (that was bad, but it had to be done).