Originally Posted by elh0102
Everyone seems to have ignored my previous post with photo (p. 2 of this thread). If you would ask your tech to clean and lube this spring, I think you will have found your problem. It has been a demonstrated fix in at least three M3 cars that my tech has inspected for this noise. You can push and bend on your disc shield forever, but that is not the problem (unless, of course you actually have a stone or something in there, which can happen).
That is because your initial post save for the picture lacked content. Respectfully saying.
But now I see what you are getting at.
I ignore my noise, and that make sit go away. In my case it was rocks. Lots of gravel on roads after winter, and since it fixes itself... I assume it has to be a rock.