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Thread: Changing Tire size in Tire Wizard

  1. #1
    Tuner Jggregory99's Avatar
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    Aug 2016
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    Upstate NY
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    It has been quite a while since I have tuned my vehicles. And since then I have replaced those that were. So this will be the first time I am using 4.0... I seem to remember the tire wizard allowing you to put in custom tire sizes to calibrate the speedo. But no longer. My stock tire is a 285/45/22 with a gear ratio 3.42. The tire wizard says tire size 30.87. I don't want to change the gear, just new tires with dimensions 305/45/22... So how do I calculate the new tire size?
    Last edited by Jggregory99; 11-13-2018 at 07:33 AM.

  2. #2
    Tuner Jggregory99's Avatar
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    Aug 2016
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    Upstate NY
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    177
    Nevermind... Found my answer...
    Sometimes I stick an ice cream cone to my forehead and pretend I'm a Unicorn...!