: I bought the 520 because I had a Schnitzer console for the monitor and a 520. The monitor replaces the cupholders and looks great! The fit is tight and looks like a factory install. Schnitzer has one for the 522 as well.

: One more question. I've read somewhere else on the net that the newer e39's do have have traditional speed sensor wires but transmitted via a buss. I found what I thought was the right black and white wire in the sterring column but it did not work.