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Synthetic oil and tranny fluid for better MPG?

Discussion in 'Gen 3 Prius Fuel Economy' started by ilovemymac, May 18, 2013.

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  1. Mendel Leisk

    Mendel Leisk Senior Member

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    I think putting 205/50R17 tires on the OEM 17" rims is straightforward, no issues. F8L has done this, I believe, maybe he'll weigh in?

    The one thing that happens with a tire having a different O.D. is your odometer and speed are going to be slightly changed, by about 1.5%.

    I'm not sure what (if anything) Toyota has done with the Prius they sell with 215/45R17, as opposed with 195/65R15. If they adjust the odometer or speedometer? Or not? The current consensus here (PriusChat) is that there's no difference in odometer/speedometer. Switching from 215/45R17 to 205/50R17, you are actually getting very close to 195/65R15.
     
    #21 Mendel Leisk, May 20, 2013
  2. ilovemymac

    ilovemymac Member

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    Good im just debating between the Bridgestone Ecopia EP422 and the Continental Pure contact with eco plus in that size. Both seem like good tires so i think its about who has them in and price.
     
    #22 ilovemymac, May 20, 2013
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