The US trailer hitch is stronger then the EU trailer hitch, and the US trailer hitch can pull more weight than the EU trailer hitch. But if you want the stronger one (the US version) you can get the US trailer hitch and then buy an EU adapter which you put on the US one and it has the same ball joint the EU one has. I'v seen this done on a US E53 X5 which was imported into europe.

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Current

2018 F85 X5 M - Individual

2012 E70 xDrive35d - 0km

2002 E53 4.6is - DINAN

Past

2002 E53 3.0d Sport

2007 E70 3.0sd

2008 E70 3.0is M-Sport

2008 E70 3.0d

2008 E70 X5 M

2011 E70 xDrive40d

2013 E70 xDrive40d