Originally Posted by lucky_doggg7

Go Bilstein PSS9 or PSS10; for initial set up, use "4" in the front, and "6" in the back. Remember, the smaller the number, the stiffer the setting. The PSS system is universally liked by M3 and Porsche guys, because they work well, they hold together well, and they don't need rebuilding. You can't go wrong with these; that's my 2 cents anyways.