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Equivalent gear calculators?

Discussion in 'The Garage' started by sled_dog, Aug 2, 2006.

  1. sled_dog

    sled_dog 1 ton status

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    Anyone know a gear ratio calculator that will tell me what gears I need to run with a certain tire? Namely I know there are some that if I enter that I have "31s and 3.73s" it will tell me that if I run 35s I need "x.xx" gears to make it the same as what I have now. Anyone?
     
  2. ryan22re

    ryan22re 1/2 ton status

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    The equation looks like this:

    old tire size/old gear ratio= New tire size/Equivalent gear ratio

    going from 31-35's with the same 3.73's and a little algebra we get:

    31/3.73 = 35/X

    X = (3.73*31)/35

    X = 3.30
     
  3. ryan22re

    ryan22re 1/2 ton status

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    Eh, now that I look at it, X should be 4.211, that's what you would need to get your ratio back to stock...

    Should be X = (3.73*35)/31 = 4.21
     
  4. 88Silverado

    88Silverado 1/2 ton status

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  5. divorced

    divorced 3/4 ton status

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  6. BigBen

    BigBen 1/2 ton status Premium Member

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  7. sled_dog

    sled_dog 1 ton status

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    I love that one, but it doesn't have an equivalent feature, you have to guess and check between the two.

    Seems like 4.56s would be about perfect to give just that little more grunt I want.
     

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