Couple of links I used

http://www.xoutpost.com/bmw-sav-foru...a-removal.html

http://www.xoutpost.com/bmw-sav-foru...hitch-e70.html

My advice is to not yank the bumper cover off, but gently work to get it loose.

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2007 328i Sport, Monaco Blue
2011 X35D - sold -Space Grey
2004 X5 4.4i - sold - Kalahari Beige
2001 X5 3.0i - sold - Pearl Beige
2006 325i Sport, Sonora Beige
2000 323i - sold - Sienna Red