Ah yes the side skirt, that is why "running board" didn't quite fit into my dictionary.

I have a few questions:

1. Was it on both sides?
2. If there was a mix and match, then that means there is a 6er out there with m6 side skirts.

I still don't know how someone could miss this, despite that fac that BMW has all these check points in place before the car is loaded and shipped.