Not a helpful response, and somewhat off-topic, but: I simply refuse to put a hitch on a bimmer out of principle.

If you need to tow, get Yukon or a Suburban, or a Toyota. Bimmers with tow hitches should be outlawed.

To quote Dennis Miller, though, "What the hell do I know?"

Good luck.

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Whenever I text "Barack," my phone suggests the word "Capable." I guess my my phone IS pretty smart.