We do not have any trailer hitch fits for your 2008 BMW 650i convertible. In fact we have none for any 6-Series models. I did check directly with both Draw-Tite and Curt and confirmed that there are no hitch fits for the vehicle. That is the bad news.
But the good news is that we do have confirmed trunk-mount rack fits for your 6-Series convertible. These are shown on the linked page and they include 1-, 2- and 3-bike options from Thule, Malone and others. Included are the unique high-end... view full answer...
It appears you are going to have to have a custom trailer hitch receiver fabricated for your 2015 BMW 6 Xdrive as there is not an aftermarket option available. We do have the Weld-On Receiver # E17 which will help in the fabrication of a receiver for your BMW.
The ZCI Circuit Protected Vehicle Wiring Harness # 119250KIT will allow you to add a 4-way connector to your BMW without having to splice into your factory wiring. This uses sensors placed over the vehicle wiring to detect when... view full answer...