Well my wheels came in before my new Prius. I had to see what they looked like so I put them on the old Prius. I tried to make sure they were light weight, 37 lbs, but I'm sure there will be a mileage penalty. Hopefully not too bad. 17" Enkei RS+M 205/45R17 Goodyear Eagle F1
Those look great. I was thinking about getting those or the RPF1. But, just decided to stick with the stock touring wheels. Please keep this posted on the MPG hit.
I'd expect about a 4-6mpg overall hit. Remember to keep everything else equal when testing. IE, plenty of miles driven, temps, weather, etc. They look great.
Do you have a link for where you purchased these? How much did they cost? I really like them! I am debating about putting some rims on my 2007 mag grey Prius...