The other day my wife and I were picking her car up after getting a tire replaced on her car and she wanted to drive my car home. I told her I would follow her so I could hear the exhaust and I noticed that the tips were bouncing up and down when hitting bumps. Anybody else have this happen? I watched other cars at the same time and didn't see any bouncing so I'll be getting back under to see if everything is tight. I did notice the borla hangers don't have the little ball on the end of the hangers like the stock and roush mufflers I had on had.