... It has to do with the receiver hitch design, as noted above. ... When BMW sold me the official original equipment receiver hitch for my X5, it included this label. The instruction to make sure to affix the label is included in the technical service bulletin, and the hitch had a BMW part number. Note the WD reference. So much for no WD on German SUVs.
My 2006 Porsche Cayenne came with this label affixed to the hitch. So no issues with a WD hitch although no increased weights either
We pick up our 2017 23fb on Monday, had a trial hook up and things look great! We are putting our rig to the test driving from California to Texas, a bit nervous but I think we will be fine. Updated my profile with a picture of the car and trailer, looks fantastic!