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Tire Question? 195 vs 185 vs 175

Discussion in 'Prius c Accessories and Modifications' started by Absolutly Red Hot, Jun 11, 2015.

  1. Absolutly Red Hot

    Absolutly Red Hot Member

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    I have a Prius C 1 , My stock 195 Bridgestones have 82000 miles on them as I drive almost all Highway miles. I just bought new wheels 15 x 7 and they recommend 175 I want to keep my high MPG so if I go wider to a 185 or 175 what will that do for my MPG?
     
    #1 Absolutly Red Hot, Jun 11, 2015
  2. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    The stock size is 175/65R15, isn't it?
     
    #2 Mendel Leisk, Jun 11, 2015
  3. Absolutly Red Hot

    Absolutly Red Hot Member

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    D'oh! you are correct. So they will work on a 7 inch wide wheel. I am assuming the stock wheels are 6 or 6.5.
    S1_STORM_MB.png IMG_5082.JPG S1_STORM_MB.png
     
    #3 Absolutly Red Hot, Jun 12, 2015
  4. NDcowPoke

    NDcowPoke Junior Member

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    Motegi Racing MR116 Black with Red Strip 15X6.5 I ordered these on Mon. so they should be here in a few days. I'm putting
    Bridgestone Ecopia EP422 Plus 175/65R15 - 84H on them
    Motegi.png
     
    #4 NDcowPoke, Jun 17, 2015
    mnmjack likes this.
  5. Absolutly Red Hot

    Absolutly Red Hot Member

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    Those should work fine. 6.5 is good, Mine were 7.0 and the fit is good. I was worried but they look good. No issues.
     
    #5 Absolutly Red Hot, Jun 18, 2015
  6. mnmjack

    mnmjack Junior Member

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    Love the look of these! My wife's Prius C is Absolutely Red also, and these would look fantastic on it!
     
    #6 mnmjack, Jun 18, 2015
  7. mahout

    mahout Active Member

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    the issue is the weight of the tire and its diameter. go heavier and mpg will drop as well as acceleration if the tire has same diameter as OEM.
    so if you go wider you need to reduce diameter by quarter or even half inch smaller. the advantage is better cornering and still get good mpg.
    if you increase the diameter of your replacement tire you will see a drop in mpg and acceleration.
    we have 205/50x15 tires on 15x7 wheels and exceed 50 mpg regularly on non contaminated gas without trying. with good hipo tires even corvettes are easy in the rain. dry if they don't rev to 3k before taking off. never bet against beating a model T across an intersection for the same reasons.
    and a quarter-inch or half inch won't matter to your speedometer or odometer. its only a few % say 2 mph at 60 mph.
     
    #7 mahout, Jun 18, 2015
  8. ufourya

    ufourya We the People

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    #8 ufourya, Jun 18, 2015
    Hyper Hybrid likes this.
  9. NDcowPoke

    NDcowPoke Junior Member

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    After reading Prius Chat and talking to two guys at Tire Rack I decided to go with the 185 instead of the 175 size tire.
     
    #9 NDcowPoke, Jun 20, 2015
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