New Tires For 2009 Prius

Discussion in 'Gen 2 Prius Fuel Economy' started by greenbean8877, Apr 8, 2012.

  1. greenbean8877

    greenbean8877 New Member

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    Location:
    Northern VA
    Vehicle:
    2009 Prius
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    I had to get new tires after 50K miles. The part number is DT004-02032-GY 185/65R15 for the tires the dealer put on the car. Are these the same tires that came on my car? I asked for the same tires. However, my fuel economy seems to have declined a bit. I am wondering if it has something to do with the new tires.

    Thanks
     
  2. direstraits71

    direstraits71 Member

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  3. JimboPalmer

    JimboPalmer Tsar of all the Rushers

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    Three
    Those are the same Integrity tires you had when the car was new.

    New tires do momentarily lower reported MPG.

    Since they are new, they are a larger diameter than the old worn tires, so the car thinks it is traveling less distance.

    New tires also 'break in', so there is a real MPG hit as well as the mis-reporting.
     
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