By the way i really dont think that the new m5 or m6 wheels will fit a current x5. Just from past experience. Becuase usaully what ive seen is that that current generation vehichles like a E39, E46 and E53 will be able to swap most parts. But know your talking about the next gen 5 and 6 series. So i don thinks so becuase thinks usually change alot with new models. But i am sure the new X5 in 07 will be able to use the E60 ans E 63 steering wheels pretty easily.

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Dinan M3

2006 X5 4.4i Sport Current Vehicle
2006 CLS 55 AMG Current Vehicle
2010 FORD F-450 King Ranch Current Vehicle
2012 GL 550 Current Vehicle

1999 M3 Dinan S3 SOLD
2001 M3 Dinan S2 SOLD
2002 M5 SOLD
2004 X5 4.4i sport SOLD
2007 335 XI Lease ended
2009 E92 M3 SOLD