Equivalent gear calculators?

[sled_dog]

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?

 

[ryan22re]

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

 

[ryan22re]

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

 

[88Silverado]

http://www.blazinobsession.com/calculators.html

http://www.4lo.com/4LoCalc.htmhttp://www.blazinobsession.com/calculators.html

 

[divorced]

I like the ones at Tyres International http://www.tyres1.com/calculators.html



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[BigBen]

I really liked this one:
http://www.grimmjeeper.com/gears.html

All the info I could want, and it let me compare two setups side - by - side!

-Ben

 

[sled_dog]

I really liked this one:
http://www.grimmjeeper.com/gears.html

All the info I could want, and it let me compare two setups side - by - side!

-Ben

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.