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  1. Join Date
    Apr 2010
    Posts
    24
    #1
    just a newbie..

    can i have some inputs regarding the problem with the ODO reading when you upgrade to stock mags to bigger mags and low profile tires? i read somewhere that it has an effect with the ODO.

  2. Join Date
    Mar 2009
    Posts
    21,667
    #2
    Uhh ... I don't think so.

    The only thing I know that the replacement of mags affects is your speedometer. The reading goes faster than your current speed. For example, speedometer reading is at 110kph, but your speed really is 100kph not 110kph.

  3. Join Date
    Oct 2002
    Posts
    635
    #3
    http://www.miata.net/garage/tirecalc.html

    wala ba effect sa overall diameter ng wheels/tires sa odometer?

  4. Join Date
    Sep 2007
    Posts
    3,358
    #4
    Quote Originally Posted by renzo_d10 View Post
    Uhh ... I don't think so.

    The only thing I know that the replacement of mags affects is your speedometer. The reading goes faster than your current speed. For example, speedometer reading is at 110kph, but your speed really is 100kph not 110kph.
    Quote Originally Posted by mackieboy View Post
    http://www.miata.net/garage/tirecalc.html

    wala ba effect sa overall diameter ng wheels/tires sa odometer?
    Meron. The fact na hindi na accurate ang speedometer kasi na alter na ang default size ng tires, it has the same effect sa ODO.

    Gawin mo para accurate parin, kunin mo ang exact ODO reading by the time na magpapalit ka ng mags. Then compute mo using tire calculator kung ilang percent ang difference then I plus/minus mo nalang sa ODO reading mo after the new mags.

    http://www.1010tires.com

    Sa tire ko na stock wich is 245/70/16 to 265/75/16:
    Speedometer Difference: 7.256% too slow
    Diameter Difference: - Diameter Difference: 6.77%

    So if ang byahe ko sa current tires is 100km sa ODO then i add 7.256% para makuha ko ang exact ODO reading just like sa stock na tires. Doon kasi calibrated ang stock ODO sensor natin.

    Example. Yung distance ng isang house namin papuntang isang house is 3.1km during stock tires pero nung nag upgrade na ako to bigger wheels, 2.8km nalang ngayon.

    HTH

  5. Join Date
    Jun 2008
    Posts
    70
    #5

ODO reading against upgrade of mags