OK, now I saw what a 550e 2010 looks like.

That's not gonna be a problem for a craftsman hitch shop.

Run it by a Corporate UHaul store, or a franchise UHaul store, and see what they say.

Next, find an indy hitch specialist.
The hitch specialist is who I went with. Fair price. Extremely well mounted to the unibody of my 83 300SD.

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'06 E320 CDI
'17 Corvette Stingray Vert