This has been a helpful discussion thread. It's given me the confidence to try towing a 23ft airstream with my new x7 40i. The trailer is 6,000 GVW and estimated 700 lbs hitch wait, but seems like with a WDH I think I should be fine. Am I crazy? I have the factory installed hitch and m brakes. The manual says 600 lbs for hitch wait. I ordered the Curt echo wireless brake controller.
I also have a 2011 x5 d, which I've only used to tow a light hobie cat, but it sounds like it's pretty capable of towing more based on this discussion thread. It doesn't have the air suspension so I imagine I need to be careful with hitch weight for it.
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