Could be a dodgy door seal with a defect that you can't see with your eye on inspecting it. The rear door seals on E39s, I believe are prone to failure and noise. Not sure how you would exactly pin point the noise source. It might also be a missaligned wing mirror. If the housing has had a knock it may not be sitting propoerly on the car and disrupting the air flow over the car.
wald wrote:
i think i'm just not use to the sound of a 4 cylinder 8 valve engine. My other car is 16v and even though it just roar when i boot it (2.0i 16v Xantia) it just sounds smoother....please let me know if i'm way of mark with that one and talking utter toss!
Wal
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Beamer engines always sound sweet, even the old four pot 8 valve engines. No disrespect but anything would sound sweeter than a Citroen engine! Its a German thing. Proper engineering an all that!
I just lurve the sound of my 6 cyl when you make it work. She is soooooo smooth, much more refined than my previous 6 cyl engine which was a 3.0i 24v Vauxhall Senator, it used to roar more but that was partly due to the dual ram intake and the fact she had 34 more bhp than my beamer.
Andrew
Edited by Andrew Rolland