Hi there, m535i owner from aus. On the rear of my M535i, after fitting 16x8 rims and 225/50/r16 pirellis(or maybe i havnt noticed it before over the road noise of the old metrics), I am hearing a clicking/rubbing sound at low <20 km/h. It clicks/rubs at one point only and as you go faster it seems to go away (der the wheel is going faster, turns into a noise).
Also, when driving along next to a wall or something that reflects sound, i can hear a hissing or grinding or something, not sure how to describe the noise but its a constant sort of "hiss" but not like a hose hiss or anything. Strange.