RC040 and RC090 questions

[gioioi]

Hi all, I am new here. Im trying to build a set of BBS RS for my Z3.

Are RC040 and RC090 outer lips interchangeable ?
Also what are the widths of stock lips and barrels for RC090 and RC040 ?

[pDubs]

I think you are confused here. BBS rc090 and rc040 are cast 2 piece wheels. There's no outer lips. The rc090 is 17x8 et20 and the rc040 is 17x7.5 et41 . They are 'style 5s".

[pDubs]

Also this is the wrong section to post this in and I hope you didn't get tricked into thinking style 5s are BBS RSs.