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How much is your speedo out?

fallmonk Nov 24, 2006

  1. fallmonk

    fallmonk Turbo Sport

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    Just wondering how much everyones speedo is out ?
    when compared to a GPS ie road Angel/Sat nav etc

    Mine is about 3mph slower than the GPS gives it credit for!
     
  2. treblesykes

    treblesykes Member

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    my speedo doesnt agree with the DIS speed alarm, alarm is set at 100 but doesnt beep until speedo reads 105
     
  3. Mart

    Mart Active Member

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    That's about the same as mine, I have my set to 95, so it beeps when I hit 100, although it doesn't actually beep, just flashes, buzzor has gone or something!
     
  4. james0808

    james0808 Active Member

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    My speedo shows 70mph my tomtom shows 68mph.Im happy with that considering i have 19's.
     
  5. Caesium

    Caesium My BM is fixed! VCDS Map User

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    I think you'll find that ALL speedo's are out by around 10%
     
  6. james0808

    james0808 Active Member

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    How can they be,reading the figures on this thread i would say abit less.
     
  7. Just Plain Old

    Just Plain Old Active Member

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    Mine is about 3mph above the speed on the road angel.
     
  8. god_thats_quick

    god_thats_quick Numptie of the highest order

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    Mine only over read by around 1-2 mph at 100mph, the thing is though it'll depend on tyre wear / pressure as well.
     
  9. C_Audiboy

    C_Audiboy Vroom Vroom

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  10. Mart

    Mart Active Member

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    As long as the speedo says your going fasther than you are, it's fine! Better then getting caught speeding cause you thought you were doing 30, when it was 35!
     
  11. A3-frankie

    A3-frankie Member

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    mine is about 5mph out at 100mph. Ive found most cars to be the same. On my old lupo i went up a wheels size by 1 inch and the speedo was then perfect to the road angel.
     

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