From my measurements the back tires needed a little more than the fronts did for flushness so I ordered the 27's. I know some 7th genners go with 25's front and rear and that also looks good. Just remember if you do both a drop and spacers you will have some minor neg camber issues on alignment, mostly on the rears. My car is just a hair out of spec but the tech said it won't affect the drivability and he was right. It actually handles a bit better with some negative camber.