Those are some sick looking wheels. Love em. BUT, forgive the offense here, but you have a 5000 lb ecobeast car. The wheel/tire setup makes it look like a cheap kid with a rice burner car who does this to make his car look fast. Your car actually is fast. Also, while you have another set of wheels when you feel the urge to drop the hammer, who has time to go home and change wheels? For me, my car is setup to run at all times. I don't have to worry about a winter tire setup to preserve the wheels, so my summer performance Hankook tires do the job just fine. I can rocket against any car, any time. And at the next light go into a low rider cruise. With no take aways. Just my opinion.
I run 275/40-20 on my car. According to GPS it actually corrected the speedo and now they match. And since I log my mileage for EVERY fill up and service, I am assured that my mileage is spot on.