You want to look for any play in the driveshaft as you twist it back and forth just aft of the disc. (rear wheels on jacks -- front on ramps)
Also look at the flex disc bolts and the metal sleeves they insert thru and look for some looseness there.
'01 E430, Sport 72,000 mi
'98 C280, 126,500 mi
Last edited by pmizell; 12-10-2003 at 02:58 PM.