I'd get in on the factory hitch group buy.

These aftermarket ones have had issues tearing up the unibody of the X5. Not a good thing. They just don't mount as securely to the vehicle as the stock one does. The stock one really integrates to the body of the X5 well.

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Kirk
Las Vegas
2016 X5 40e Mineral White/Black Dakota Leather, ZLL, ZCW, ZDA, ZDB, ZPP, multi contour seats, rear side window shades, HK stereo
2011 E90M3, 6-speed manual