Good for you; sounds like a good choice. I should have kept my M5 and just towed my 4k trailer with it instead of keeping the X5. My X3 and M5 experience tricked me into thinking an X5 might be reasonably reliable. It isn't.

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2016 GMC Sierra 2500 HD All-Terrain, Duramax 6.6

2011 X5M Alpine White/Sakhir Orange, Eucalyptus, Spare tire!, Comfort, Soft Close, Tech, Rear Climate, Individual dash, Individual Audio, HUD, DVD, USB, Cold.

Gone:
2008 4.8i
2005 X5 4.8is
2004 X5 4.4i Sport
2004 X3 3.0i 6MT
2002 M5