I bought a sort of "off brand" rear bumper with tire carrier. Every bolt is tight, but there was still slop in the swing, it would swing in and out. So instead of buying a new one, I decided to try to fix the issue. If you grab the tire, and pull back, it'd move at least 2 inches forward and back. I was just waiting for it to break off on the road. I bought a hard foam rubber for a boat dock, and fashioned it to fit on the swing, and serve as a bumper. I removed the factory rubber snobbery as well. The rubber bumper I bought was 4x4x24 inches. A few slices with a knife, and some epoxy, and all set. No more sloppy bouncing around.Nice and solid.