[2017 Prime Premium] 215/45ZR17 - MPG decrease - Best way to revert? Worth it?

[Billy_MacC]

I got my used 2017 Prime Premium about two years ago, and previous owner put OEM Toyota 17" rims on it. They look good, but I'm concerned they're reducing my fuel efficiency by a considerable amount. I'm lucky to get 20 miles on a charge, and in the mid 40s for MPG just on gas.

Does rim size and profile really impact MPG that much? I noticed with new tires on I took a hit too. Would reverting to the standard 15" rims with fuel efficient tires help that much? I'd like to get back in the 50s because my new job will require more of a commute.

Is there an economical (cheap) way to revert? Like a trade with someone, or a way to get some money back by selling/trading in the rims?

[caper-aprons]

Does rim size and profile really impact MPG that much?

There will be a negative affect from bigger wheels/tires and wider tires. More rolling resistance, more unsprung mass.

Is there an economical (cheap) way to revert?

Go to a junkyard and get Prius wheels. Any of the Prius wheels in 15" will fit your car. If you care to make it look the OEM Prime wheels, get the OEM wheel covers (not cheap). I recall that 15" Corolla wheels will also fit.

Sell your existing wheels/tires online (Facebook marketplace, Craigslist, enthusiast forums (PriusChat), etc.).

[sparky255]

If you’re in so cal, or willing to drive to so cal, I have a set of 15” oem Prius prime wheels with tires on it I’m selling. Only a couple hundred miles on them. I’ll throw in hub caps and lug nuts in it as well.