all of the rs500 ran mainly 17" bbs split rims early on a few with 16" rims most of the bmws run by sytner,weaver and co had 16" bbs rims the same,when my graham goode listerine car came back from indonesia it still had the original centrelock centres but the outer rims were changed to suit the thundersaloon style it came back as and it ran 10"x17" at the front and 12"x 17" at the rear a total nightmare to get in and out of my garage