I have the Supersprint Magnums on my M5. We installed them day one when I took delivery. Therefore, they have gotten a little louder since the first day, as I now have 3900 miles on my car. I really like the look. The tips are larger and more pronounced than stock and additionally, they are chrome plated. They also sound great.. especially when you step on the throttle...nice deep rumble, but not obnoxious. We would not want this car to sound too loud?...
my 2 cents!
my 2 cents!