Okay, tires I bought to run with are rubbing a little on the inside. I had posted on the motorsports page at Nasioc.com about this and was told to use spacers and thought I would get your opinions on this. I would probably need 3mm on the front and 5mm in the back. I am running in SP class and was wondering is this okay for the class and moreover, is it safe to use spacers, even ones these small? Thanks for your help!