I have a 335 and when I break a little harder than normal I hear that strange noise, it is very hard to describe. It sounds like something is sliding, almost like a metal piece(s) sliding forward. When I accelerate after that I hear that same sound, like it is sliding back. The car drives and breaks absolutely perfect otherwise so I have no clue what could it be. The front breaks were changed and have only about 1000km on them.
In the video, on the 34-35th seconds of the clip (3 seconds after I say "break") the noise is most pronounced but you can hear it also on the 6-7th seconds during acceleration.
Any suggestions !?!