Originally Posted by 08STI206
This wont help you out right now but my Advan RG-Ds are currently in production w/Advan as we speak. I placed my order last month and was told theres roughly a 90 day time frame. I did order the same exact size you are looking at. 18x9 +45 in Racing Hyper Silver. The lip has the same diameter as the 18x9 +25mm offset so you might as well get the correct size offset. I'm gonna be running 255/35/18s and from what i was told, it should be near perfect fit. I'll have to wait n do a test fit to see if i need a roll or not. Should be here sometime next month.
you shouldn't come close to needing to do any fender mods. +45 is a fairly conservative set up, especially on 08+ sti.