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Re-calibrating speedometer for new tires

Discussion in 'Gen 2 Prius Main Forum' started by nyprius, May 24, 2006.

  1. nyprius

    nyprius Member

    Joined:
    Oct 8, 2005
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    Location:
    Saratoga Springs, NY
    Vehicle:
    2005 Prius
    I'd like to put 195/60R15 tires on my 05 BC Prius. The US 185/65R15 OEM tire looks narrow on the car and doesn't seem to handle well (poor cornering, freeway tracking, etc). The wider 195 tire would handle better and look better. In Japan, Europe and Australia, the OEM Prius tire is a 195. Japan and Europe use a 195/55R16, but I don't want to buy new rims. The 195/60R15 has 5-8 more revolutions per mile (depending on tire brand). This would affect the speedometer reading by less than 1%. Is there a way to re-calibrate the speedometer/odometer for new tires?

    In an earlier post, someone said re-calibration could be done. But I could not find re-calibration info on PC.
     
    #1 nyprius, May 24, 2006
  2. busyrosy

    busyrosy New Member

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    can you "cheat" your mpg by putting real small tires, and not calibrating the odometer?

    :p
     
    #2 busyrosy, May 24, 2006
  3. tmorrowus

    tmorrowus Member

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    Dec 30, 2003
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    There is a button in the nav setup menu that you're supposed to press when you get new tires. But that only affects the nav system, not the speedometer display.
     
    #3 tmorrowus, May 25, 2006
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