Car Is Making A Noise on 2002 BMW 530i

My Car is making a Strange knocking noise wen im taking 4rm 20-20miles it sounds like i have a drummer underneath my car but has i pick up speed it goes away

Asked by for the 2002 BMW 530i
1 answer
you need a good BMW specialty shop to check your driveshaft
support.....this should be done ASAP