Yes they fit. I get this question a lot. The car is lowered to stock GT3 ride height. With OE GT3 wheels, no spacer and 315/30-18 Pirelli Corsa race rubber I have had no problems at all with rubbing. They do not stick out beyond the fender at all. This size is probably a little bit overkill for the rears. A 305 or 295 may be a faster tire actually. The front is where you need the wide rubber on these cars. 235 is the minimum. I’m looking for a set of wheels that will allow me to run 245 or 255 up front.