okay..because to me..that doesn't sound normal..and the mechanics just said it's okay, which I usually just take as BS.

If yours has the same thing then I guess that's how it is.

 

Yeah... lots of threads on the various bimmer boards.
The chattering is generated because it's a hydraulicly actuated system and is constantly variable.
Most other systems are electro mechanical & move in steps.

BTW...
I heard of a guy launching @ 4500 in 2nd and got a 4.2 0-60

 

^hmmm that's an interesting concept. Must be hard on the driveline

 

pretty ridiculous...can't imagine his clutch staying alive.

 

Didn't say he was the sharpest knife in the drawer.

 

haha..that's an understatement.