Do you have any pics of your car that we can see?Plenty of us running 325s on R spec wheels, and it works, but they poke just a little, so you get a little more road splatter, but otherwise no rubbing.
If you're asking if it will rub on non R spec tires, I'm not sure. They're half an inch narrower and I'm sure the back spacing and offset moves the center of the tire inward just slightly so it might rub.
Freaking wow! Thanks that looks sick!!View attachment 1549047
View attachment 1549048
View attachment 1549049
325/30's on R-spec wheels. No rubbing.