I remember there was a thread discuss about the internal annouying sound in E36 at the old forum, but i could not found it in here.I was having the problem on my E36, I had been taken out all my back seat and trying to locate where the sound from, but i couldn't find it. I guess it could be from the B-pillar.Anyone facing the same problem as I?sifu-sifu, any advice and recommendation? Or maybe could give me a hand on this.Thanks.________SLR MCLAREN