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need help - recommended tire pressures?

Discussion in 'Gen 3 Prius Fuel Economy' started by harith, Jan 5, 2018.

  1. harith

    harith New Member

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    Hi everybody my car is 2015 prius persona
    and my question is what's the recommended tiers pressure for best fuel economy ?!
     
  2. scona

    scona Active Member

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    Good Morning. A search on Tire Pressure should give you all kinds of information.
     
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  3. KennyGS

    KennyGS Senior Member

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    Owners tend to inflate several psi over the recommended tire pressure on your door sticker.
     
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  4. bisco

    bisco cookie crumbler

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    welcome!

    42f/40r is common, some run a little lower if the ride is too stiff.
     
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  5. JimboPalmer

    JimboPalmer Tsar of all the Rushers

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    I do not inflate to best fuel economy, as that is not safe. i inflate to best handling and longest tread life.

    Depending on the tire itself, that may be 38 to 42 PSI in front, and I follow Toyota's recommendation to have the rears 2 PSI less.
     
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  6. NavyLCDR

    NavyLCDR Active Member

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    I run 42/40.
     
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  7. Mendel Leisk

    Mendel Leisk Senior Member

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    Keep in mind OP has 17" low profile tires.

    Door sticker says 33/32 psi (front/rear). I set our's (215/45R17 Michelin Pilot hx MXM4) at 36 psi, for all four. That pressures seems a reasonable bump, without getting too harsh (it's harsh to begin with) and I find varying front/rear pressures by one pound trivial, and a pain when you're rotating.
     
  8. Jamieconway

    Jamieconway New Member

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    Passenger-car tires are typically 5 to 15 p.s.i. below the commonly recommended level of 30 to 35 p.s.i. Under-inflated tires add resistance, making your engine work harder to push the car along the road and burning more fuel.
     
  9. Grit

    Grit Senior Member

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    In cold non-rainy/snow weather, air up the front tires to the max PSI spec printed on the front tires. Air up the rear tires 2 psi LOWER than the front tires.