No noise at all, and I just installed my winter wheels. Both rear wheels have the same amount of play too, chassis has 180,000km, but like I said it takes a lot of effort to show play. it feels like it's coming from behind the spindle/knuckle area, it's hard to tell doing it solo, I'm assuming bushing related?
Going to hop on realbmw and get a screen shot maybe
EDIT: ok looks like it may be the integral link pt# 33326770749 from the website, I know it's not the bearing as the complete spindle/knuckle moves. Part #4 in the diagram.
http://www.realoem.com/bmw/diagrams/q/e/230.png