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07 prius tire question

Discussion in 'Gen 2 Prius Accessories & Modifications' started by tym2brn, Oct 20, 2014.

  1. tym2brn

    tym2brn Junior Member

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    Any problem running 195-65 r15 on My 07 Prius?
     
  2. jdenenberg

    jdenenberg EE Professor

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    Only that it will make your Odometer, speedometer and MPG meters read lower due to fewer revolutions per mile.

    JeffD
     
  3. Mendel Leisk

    Mendel Leisk Senior Member

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    Just for reference: what's the stock size?
     
  4. JC91006

    JC91006 Senior Member

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    185/65/15
     
  5. Mendel Leisk

    Mendel Leisk Senior Member

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    About 2% difference (say for revs per mile), not too much.
     
  6. wa-chiss

    wa-chiss Member

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    I just got some 195-65R15s on my prius. No rubbing at all. Plus, my speedometer was showing 75mph when GPS showed 72. So, with the bigger sized tires, I'm close to perfect.
     
  7. yibo829

    yibo829 Junior Member

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    Do you feel that the change made any difference? Such as in handling, ride comfort, etc?
     
  8. 69shovlhed

    69shovlhed Surly tree hugger

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    205/60r15 is even better
     
  9. alekska

    alekska Active Member

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    For breaking and cornering on dry road - yes. For fuel economy, snow, aquaplaning - no.

    - Alex
     
  10. 69shovlhed

    69shovlhed Surly tree hugger

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    if you get quality tires none of those are a problem
     
  11. Daves09prius

    Daves09prius Active Member

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    I was able to get handling and good gas mileage (50 MPG+) out of my General Altimax 205/60r15, and my spedo was finely accurate! I switched back to the OEM size because at the time I desperately needed 4 new tires, and didn't have a lot of money to spend, the OEM size were about $53 per tire! so that's what I bought, and my spedo is back to being incorrect -- when the car says I'm driving 65, I'm really driving 62. The larger 205/60/15 was $78 per tire, and my budget couldn't handle that at the time...
     
    #11 Daves09prius, Dec 14, 2014
    Last edited: Dec 15, 2014
  12. wa-chiss

    wa-chiss Member

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    With the innacurate speedometer, any MPG calculations you do will also be innacurate. Therefore, with the bigger tires resulting in a more accurate speedometer, yes you will notice the number is lower by what ever the percentage difference the new, bigger diameter tires are. Knowing the innacuracy before the tire change, I always calculated the miles by .98 and there has been very little to no change on MPG's. I have noticed that my ride is more smooth due to more rubber between the wheel and the road. I did not get them to benefit performance. Also, they fill the fender well better. I personally would not go up to a 205/60R15. Mostly for how skinny our wheels are for a 205. I imagine there is enough bead flex around the rim of the wheel to warrant the note for many 205 size tires to not go on wheels with less than 6-6.5" width. The prius has 6" width wheels, so pay attention to the minimum wheel width spec. If it says min 6" width, you are good.
     
    Daves09prius likes this.
  13. 69shovlhed

    69shovlhed Surly tree hugger

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    I had 205/60r15's on my '04 for years, they look much better, ride better, way better handling and braking, and make the speedo more accurate. I didn't notice any loss of mileage, but I didn't really worry about that with the oem floppy integritys that came on it. now I got those same crappy integritys on my '06 and they're terrible.
     
    Daves09prius and yibo829 like this.