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Real top speed of Gen 3 Prius?

Discussion in 'Gen 3 Prius Main Forum' started by Robert Holt, Sep 16, 2013.

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  1. Robert Holt

    Robert Holt Senior Member

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    Considering making You Tube video which would require a high speed chase sequence with a Prius. Need to know what is safely achievable with proper speed-rated tires (which I don't have yet) on a flat surface and wind calm. Don't want anyone to do anything unsafe or illegal, but if you happen to have knowledge on this topic I would appreciate knowing it.
     
    #1 Robert Holt, Sep 16, 2013
  2. retired4999

    retired4999 Prius driver since 2005

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    I think if I remember right, top end is governed at 112 mph.
    If I'm not right I am sure someone will let me know! Soon! :)
     
    #2 retired4999, Sep 16, 2013
  3. xpcman

    xpcman Senior Member

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    As fast as it will go. The stock tires may be S or T rated and I doubt you can get a Prius over the 112 mph S limit. H rated tires are rated at 130 mph well over what a Prius can do (except maybe downhill).
     
    #3 xpcman, Sep 16, 2013
  4. jdcollins5

    jdcollins5 Senior Member

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    You are correct about the 112 mph top speed. This is the computer limit to protect MG2 from overspeed. This is based on OEM tires and the final gear ratios.
     
    #4 jdcollins5, Sep 16, 2013
  5. retired4999

    retired4999 Prius driver since 2005

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    I suppose you could take the govenor off!
    I think on the salt flats it went about 135 mph, I think! :) :unsure:
     
    #5 retired4999, Sep 16, 2013
  6. xpcman

    xpcman Senior Member

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    That was a Gen II and they changed the engine over to a standard Otto ICE with more horsepower.
     
    #6 xpcman, Sep 16, 2013
  7. fuzzy1

    fuzzy1 Senior Member

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    The speed limit is set by controller firmware, not a mechanical governor.
     
    #7 fuzzy1, Sep 16, 2013
  8. retired4999

    retired4999 Prius driver since 2005

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    That figures! Got me! Thanks!

    And no govenor! There goes my age again! Darn computers. :D
     
    #8 retired4999, Sep 16, 2013
  9. retired4999

    retired4999 Prius driver since 2005

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    Prius on the salt flats

     
    #9 retired4999, Sep 16, 2013
    Burna J and Daddyjeph like this.
  10. JimboPalmer

    JimboPalmer Tsar of all the Rushers

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    #10 JimboPalmer, Sep 16, 2013
  11. retired4999

    retired4999 Prius driver since 2005

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    #11 retired4999, Sep 16, 2013
  12. Priusmpg

    Priusmpg Active Member

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    I got a citation for going 109 mph on dumbarton bridge the cop caught me slowing down I got speeds of 112
     
    #12 Priusmpg, Sep 17, 2013
    carlosfpr likes this.
  13. jdcollins5

    jdcollins5 Senior Member

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    Sorry about the citation. Could you tell that you were computer limited at 112 mph ?
     
    #13 jdcollins5, Sep 17, 2013
  14. Priusmpg

    Priusmpg Active Member

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    Yeah because it would bounce and you could feel the throttle cut off it goes from 112 to 111 then come back to 112
     
    #14 Priusmpg, Sep 17, 2013
  15. jfschultz

    jfschultz Active Member

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    I don't have the delta for the Gen III, but based on the indicated vs true speed on a Gen II, I suspect that the cop truly tagged you at your true top speed.
     
    #15 jfschultz, Sep 17, 2013
  16. Priusmpg

    Priusmpg Active Member

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    I saw the cop as soon as he saw me and I thought he clocked me at 108 but I was 109 I am pretty sure I wasn't going 112 because it was very very slight turn so I was slowing down a bit
     
    #16 Priusmpg, Sep 17, 2013
  17. Priusmpg

    Priusmpg Active Member

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    I had one of my friends take the limiter off and I seriously advise you guys not to but when I got to 127 mph this happens
     
    #17 Priusmpg, Sep 17, 2013
  18. Priusmpg

    Priusmpg Active Member

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    image.jpg
    Salvaged at 180,000 miles
     
    #18 Priusmpg, Sep 17, 2013
  19. Priusmpg

    Priusmpg Active Member

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    image.jpg
     
    #19 Priusmpg, Sep 17, 2013
  20. Priusmpg

    Priusmpg Active Member

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    For some reasons no airbags deployed image.jpg
     
    #20 Priusmpg, Sep 17, 2013
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