Probably your rear end ball joints and control arm bushings need replacing. If they haven't been done they are probably due? Most "inspections" probably wouldn't reveal any of those being worn until you get thuds, etc. At least it did for both of my X5's.

Good Luck!

__________________
"I can’t understand it. I can’t even understand the people who can understand it"

Queen Juliana (1909-2004), of the Netherlands

"If you choose not to decide, you still have made a choice!"


2004 X5 4.8is Imola Red-228K ZF-GA6HP26Z-Sold
2006 X3 3.0i Mystic Blue-175K, ///M pkg 6-Spd Manual- Trading in 6/10/17 for a Mini too!
2003 Silver X5 3.0- sold
2000 VW Beetle 1.8 turbo-165K- Totaled 9/11/16