BBS RC 061 Center bore?

[Dani]

What size is the centerbore?

74.1 or 72.6?

[McGavin]

From my research i found:

The e39 rc061s have the 74.1 center bore and the e38 ones have a 72.6 center bore.
The only difference between them is part # and the rears on a staggered set of 18" style 5s (18x9) have et 24 on the e39 and et 22 on the e38. I don't know which ones are more common though and don't have any firsthand experience.

[Dani]

These are from a e38 what i heard, have to get the centerbore mesured see if i need rings to make them 72,6. Have som balance issues. The wheels are balanced and there is no dirt or rust on the hub or back of wheel.