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Tire Size Question

Discussion in 'Gen 2 Prius Main Forum' started by sweetguy, Jan 12, 2010.

  1. sweetguy

    sweetguy Junior Member

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    Consumer Reports recommended Hankook H727 tires and I am ready to order them. However the stock Prius tire size is 185/65/15. I can get the Hankooks in 195/60/15 or 185/60/15.

    Which would be better and why? All replies will be appreciated.
     
    #1 sweetguy, Jan 12, 2010
  2. Boo

    Boo Boola Boola Member

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    Using the Miata Tire Size Calculator

    -- with 185/60R15 tires, the speedometer will read 3% faster

    -- with 195/60R15 tires, the speedometer will read 1% faster

    So I would go with the 195/60R15 because speedometer and odometer readings will be more accurate.

    Also, the wider treadwidth of the 195s should produce better handling and shorter braking distances -- two things the Gen II Standard Prius needs.

    Note however that if you do go with the Hankook Optimo H727s in the 195/60R15 size, I think you can expect to get as much as 2 fewer miles per gallon than the OEM 185/65R15 Integrities.

    But I think that's a tiny price to pay for a much better and safer tire.
     
    #2 Boo, Jan 12, 2010
  3. sweetguy

    sweetguy Junior Member

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    Thanks so much -- great answer.

    One more question -- I just noticed they also come in 195/65/15 How would that compare to 195/60/15?


    Wayne
     
    #3 sweetguy, Jan 12, 2010
  4. Boo

    Boo Boola Boola Member

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    With the 195/65R15, the speedometer will read 2.1% slower than the OEM 185/65R15

    Tire size calculator

    Just in terms of RPMs (revolutions per mile) -- which affect speedometer and odometer readings -- the 195/60R15 is the closest tire size to the OEM 185/65R15.
     
    #4 Boo, Jan 12, 2010
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