Thanks a lot for the responses guys!!
Does anyone know if the following staggered sizes will work with X5:

1st option:
Front wheel 22x9.5 : 275/45/22
Rear wheel 22x10.5 : 305/40/22

2nd option:
Front wheel 22x10.5 : 285/30/22
Rear wheel 22x12 : 335/25/22