I have done a lot of searching and can't find a direct answer to my question. I am interested in a set of 18X8.5 BBS CH's for my 99 BMW 323i sedan. I know that the 19's in the same wheel have a 35mm offset, so I assume that they are the same; but with a smaller diameter. I have been told that I would need a 35mm "center"(I guess the same as offset). I guess they would be about the same as far as fitment goes for the e36 and e46 models, as long as they are not anything special like an M3 with the ability to have a wider wheel. I have an opportunity to pick up a good deal on a set (shortly) and would appreciate any help you can offer on this. Thank you!