A few tips for adding cup holders to the front of an E39 BMW.
I had the now obsolete Traffic Master system so I replaced it with the cupholders (available on eBay).
However when fitting I struggled to work out what you need to screw them to. Apparently you need some metal clips that give you something to screw to.
Looks like the part number is ’07-14-6-988-451′. Also described as a ‘Body Nut’.