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Author Topic: Auto Tranny Question  (Read 2148 times)

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streetmaster

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Re: Auto Tranny Question
« Reply #15 on: October 15, 2007, 04:08:46 PM »
Point well taken there (Bounty Hunter) I think the best bang for the buck would be 31's with 4.88's.
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Offline Jeffy

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Re: Auto Tranny Question
« Reply #16 on: October 15, 2007, 05:13:30 PM »
Quote from: Bounty Hunter on October 15, 2007, 11:25:58 AM
Streetmaster, keep in mind that the gearing change, when figured mathematically to match the oem setup, only accounts for the increase in tire diameter.  It does nothing to account for the large increase in rotating mass added when going with larger tires.

For this reason I think it's best to go a little lower on gearing than the mathematical equivelant to oem, helps get the heavy tires moving.

+1 Also weight added by bumpers, winches as well.  Then there is the aerodynamics at 35mph and up that is decreased as you go taller and add things.
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