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Thread: 98 Speedo

  1. #1
    Potential Tuner
    Join Date
    Oct 2004
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    98 Speedo

    Just getting started with this program, so I thought I would adjust my speedo. On the 98's, it lists the parameter as tires/gears. The current program has a number of 7.29. If you take 245/50 16 diameter and divide it by 3.42 you get 7.49, not 7.29. I wanted to change the number since I have 255/50 16s on the back, but I dont understand where the 7.29 came from. The car still has original gears and has always had 245/50 16s on it.

    Anyone have a clue?
    98 Z28, Jet Hots, LS6 intake, all the basic mods

  2. #2

    Re: 98 Speedo

    as long as you change the number by the ratio of the new tire or new gear then it will be ok.

    I count sheep in hex...