Looks like 335xray also has a second X5 that he did a non-staggered 20x10 X6m replica on with 275/40/20 rubber.

This might be an option too and would be nice because then I can rotate the rim/tires on all 4 corners.

Just not sure if the rims would fit my X5 though.

http://www.xoutpost.com/bmw-sav-foru...ire-setup.html