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15" Diameter Wheels/Tires verses 17"

Discussion in 'Gen 3 Prius Accessories and Modifications' started by vito.a, Sep 4, 2013.

  1. vito.a

    vito.a Junior Member

    Joined:
    Aug 25, 2013
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    Location:
    Tucson, AZ
    Vehicle:
    2010 Prius
    Model:
    IV
    I'm considering a set of 17" wheels and tires. I'm just not fond of the plastic hubcaps. I researched the OEM 215/45-17" tires and they are slightly smaller (.4" in diameter and 1.2" in circumference) than the OEM 195/65-15 tires. I also found that the 225/45-17 tire is the same size as the OEM 15" tires.

    Has anyone tried the 225/45-17" tires?
    If you switched to the 215/45-17" tires/wheels did you recalibrate the speedometer, or is 1.5% close enough?
    Also, does anyone have data on the differences in MPG between the 15" and 17" wheels?
    Size Dia Cir
    215/45-17 3.8" 12.3" 24.6" 77.3" 819/mi 60MPH 10000mi N/A
    195/65-15 5.0" 12.5" 25.0" 78.5" 807/mi 59MPH 9855mi 1.5%
    225/45-17 4.0" 12.5" 25.0" 78.5" 808/mi 60MPH 10000mi N/A
    ​
     
    #1 vito.a, Sep 4, 2013
  2. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
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    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    205/50R17 is also very close to 195/65R15, slightly bigger. It's also more likely to fit on OEM 17" rims, less likely to touch anything, and be better than 215/45R17 for RR, all things being equal. Our Canadian Touring came with the 17", in our case Bridgestone Pilot. They're not rated LRR, but seem pretty good still.
     
    #2 Mendel Leisk, Sep 4, 2013
  3. vito.a

    vito.a Junior Member

    Joined:
    Aug 25, 2013
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    Location:
    Tucson, AZ
    Vehicle:
    2010 Prius
    Model:
    IV
    You're right. The 205/50-17 is only .1" larger in diameter and .3" in circumference.
    Thanks
     
    #3 vito.a, Sep 4, 2013
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