Pretty sure that they are specific to the E70, the cut matches the rear profile perfectly.

I will post the part number and price here soon (don't have the spec sheet to hand just now).

BTW: I was hoping that the dealer was going to fit the 4.8 squarer tips, but to be honest the round ones look pretty good and I don't have to go hacking and welding a brand new car. The price of the round tips was very reasonable.