My Prius has stock wheels, and I was under the impression that these brake caliper covers would fit without further alterations to the Prius. Nope! Not enough clearance between the brake covers and the wheel. Unfortunately, the first one I tried to install wound up with a paint scratch to the cover, so I knew there was no way I could now return these for a refund. To finish installing these, I need to spend another $115 for wheel spacers and additional lug nuts, which I'm not going to do.