When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
most of the track 7gt3 guys I have run into at the track are using 18" wheels so this should be a quick sale over on the 7gt3 forum!
Most guys are running the 315/30 R888s on the 7GT3. I've got a set of the 305/35 rears sitting in my garage I used for 1 day then moved to the 315s (of course now I'm on the Hoosier Pipe), so demand may be a little soft.