My cush drive rubber finally gave up after 30,000 or so miles. Your cush drive should have no play in it at all. Seems to me if it does, it could lead to premature chain and sprocket wear.
I wonder though why a few bikes have quick cush drive rubber wear? Is it because the chain has too much play, or maybe too tight? Or maybe it's the composition of the rubber breaking down prematurely?
If you ever change it, I recommend the TBird rubber. Gives a slightly tighter fit than the stock one.
