hello All. I recently got my 330i like 3 weeks ago. still under 500miles, but had this whistle/wind noise or whatever it is which I never heard from any car before, since the first day. Then I found this thread
https://f30.bimmerpost.com/forums/sh....php?t=1478202
and it fixed it. If it sounds similar to ur problem, check out the solution posted there (low tech version of hitting and pushing the seals w/ my fist). Hope it helps.