A tire assembly includes a tire. The tire has a pair of perimeter walls coupled to and extending inwardly from an outer wall of the tire. The pair of perimeter walls of the tire each has a distal edge with respect to the outer wall of the tire. The distal edge of each of the pair of perimeter walls of the tire defines an opening. The tire may be coupled to a wheel on a vehicle. The tire is one of a pair of the tires each positioned adjacent to one another. A ring is coupled to and extends outwardly from an associated one of the pair of perimeter walls of the tire. The pair of tires is oriented so the ring on each of the pair of tires is directed toward one another. The ring deflects an object outwardly from between the pair of tires.