High reading speedometer 456 GT 1995 | FerrariChat

High reading speedometer 456 GT 1995

Discussion in '456/550/575' started by AKINSB, Mar 16, 2013.

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  1. AKINSB

    AKINSB Formula Junior

    Feb 15, 2013
    502
    Santa Barbara
    Full Name:
    Alex K
    #1 AKINSB, Mar 16, 2013
    Recently acquired car. Speedo reading high by 10 mph. Confirmed by several highway radar speed monitors. With the speedo reading of 80 mph radar reads 70 mph.

    Can this be adjusted?

    Thanks

    AK
     
  2. pma1010

    pma1010 F1 Rookie

    Jul 21, 2002
    2,559
    Chicago
    Full Name:
    Philip
    #2 pma1010, Mar 16, 2013
    Tire size?
     
  3. AKINSB

    AKINSB Formula Junior

    Feb 15, 2013
    502
    Santa Barbara
    Full Name:
    Alex K
    #3 AKINSB, Mar 16, 2013
    Standard OEM rims

    Goodyear Eagle F1
    F 255/45 ZR17
    R 285/40 ZR17
     
  4. Bookum

    Bookum Karting

    Nov 3, 2010
    119
    Chester County PA
    Full Name:
    Dan
    #4 Bookum, Mar 16, 2013
    Those traffic radar guns are not typically that reliable. I would have a friend drive next to you and calibrate that way.
     
  5. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
    38,087
    Clarksville, Tennessee
    Full Name:
    Terry H Phillips
    #5 tazandjan, Mar 16, 2013
    Ak- Check your odometer against a set of mile markers and see how accurate that is. Ferrari speedometers have generally read higher speeds than actual, at least all the ones I have owned. If the odometer reads correctly, you just have a safety feature for speeding.
     
  6. greyboxer

    greyboxer F1 World Champ

    Dec 8, 2004
    12,314
    South East
    Full Name:
    Jimmie
    #6 greyboxer, Mar 18, 2013
  7. drake123

    drake123 Karting
    Silver Subscribed

    Jan 22, 2012
    181
    Pa
    Full Name:
    Drake
    #7 drake123, Mar 18, 2013
    I use an app called "Speed Box" for an iphone. My 550 is accurate within 2mph. The Fusion is within 1, and the other extreme is my CRX which is about 6 mph off. The readings were all taken at 70.
     
  8. RICARDO12

    RICARDO12 Rookie

    Oct 9, 2018
    1
    Full Name:
    Richard A Goff
    #8 RICARDO12, Oct 9, 2018

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