Well, I have a set of 18x8.5 and 18x9.5. Both are at +40 offset.
Had the wheels forever and I'm planning on putting it on the BRZ I picked up this past weekend. Since they're 5x114.3, I'd need either spacers or do a hub conversion. The thinnest spacers I've found is 11mm from project kics.
Would that make the actual offset +29? Seems like that would get me pretty close to flush when I use this calculator.
http://www.frsproject.com/tire_size.php
Am I right or completely off?