Raul528i said:
Just the centre caps are missing.
So I guess I wouldn't be able to put the turbines on without the caps?
Nope. You can run them exactly like the picture. The centre just clips in to cover the bolt holes and make it look pretty.
The main turbine part like in the picture is held in place by 5 allen skrews from the back of the bare rim. see the openings on the spokes in this picture.
There are also fins that go between the turbine part you need those to mount them properly.
If all you are missing is number 5 i would buy them! And get the caps at the dealers. I am jealous. You have the most expensive and main part of the system. The turbines are made out of magnesium by the way.
This is a hunch. But I have always suspected that the standard e34 rim centre cap may fit into the turbines.