Motorcycle Tire Rings by Brian Bergeron Designs are the original Tire Rings since 2002. Stylized representations designed to compliment common elements used by a variety of tire manufacturers. These rings make great men’s gifts or a unique wedding band. Made in cobalt, gold, palladium, platinum and sterling silver. Style MCT01 is 6.75 mm wide, MCT02 is 6.5mm wide, and the MCT02FAT is 9 mm wide.