Hi there.
few days ago i started to hear klunk noise when i was pressing a brake pedal, now i can feel it too it's like when i press a brake and the tranny down shifts from 2 to 1 there's a loud knock sound and it feel's like the tranny. suddenly stops on it's own for a in that down shift time from 2 to 1st gear and it feel's like something hit me in the back.
HELP PLEASE!!!

What year/ model?

2002 530I sport package, auto trany, 50km