Bad vibrating type noise when I turn the wheel, what is it and how do I fix it?? on 2003 BMW 325i

Bad vibrating sound when I turn the wheel either way ?

Asked by for the 2003 BMW 325i
Well Teddy, have Kim do the wheel turning while you watch ,under hood, for a problem with the drive belt. See if it is vibrating, possible tensioner problem! If you can't see anything obvious, y'all switch places. Kim may see something you don't!