Bigger! I already have 15mm spacers with stock rims/tires, but decided to see how 225/45/17's would fit where 205's were. Only tried the rears tonight, but did test-fit a front, no issues on the front. So far, so good. There may be some....shall we say "adaptations"?....done by the new bigger rubber on the outer edges of the rear inner fender liners (maybe even the plastic wheel arches, lol) once I get a proper alignment done, but the front looks just fine.