From my research I believe I found the numbers needed for wanting the flush wheel look on the prius. Without any Fender work. Fronts: 8 wide. 45 offset. Rears: 8 wide. 40 offset. With Fender work. Fronts. 8 wide. 40-35 offset. Rears. 8 wide. 35 offset. Very helpful website: willtheyfit.com