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TIRE/GEAR CALIBRATION

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coopertiresux
 Post subject: TIRE/GEAR CALIBRATION
 Post Posted: Thu Apr 05, 2012 9:53 am 
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Posts: 16
Location: S.W. Georgia
Hello,

Does calibrating tire hieght and axle gear ratio do anything for performance (i.e. fuel mileage)?

My truck is currently running the factory 3.42 gears; anyone want to suggest a gear that would really break my 31.25" tall tires loose?

Thanks for any help!
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RON @ SUPERCHIPS
 Post subject: Re: TIRE/GEAR CALIBRATION
 Post Posted: Thu Apr 05, 2012 12:46 pm 
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Joined: Tue Jul 25, 2006 9:41 am
Posts: 18258
Location: SUPERCHIPS
Adjusting the gear or tire ratio in the tuner only affects the speedo/odometer/ABS/transmission shift points.

Nothing for performance.

Now, changing the gear ratio in the truck physically, will change the trucks power band.
You will gain more performance in lowend of the powerband.

Ron

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coopertiresux
 Post subject: Re: TIRE/GEAR CALIBRATION
 Post Posted: Thu Apr 05, 2012 12:49 pm 
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Joined: Sat Mar 10, 2012 5:34 pm
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Location: S.W. Georgia
RON @ SUPERCHIPS wrote:
Adjusting the gear or tire ratio in the tuner only affects the speedo/odometer/ABS/transmission shift points.

Nothing for performance.

Now, changing the gear ratio in the truck physically, will change the trucks power band.
You will gain more performance in lowend of the powerband.

Ron


Hi Ron,

Any Idea of a good streetable gear? One that may better handle the factory 20" ID tires?
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RON @ SUPERCHIPS
 Post subject: Re: TIRE/GEAR CALIBRATION
 Post Posted: Thu Apr 05, 2012 4:07 pm 
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Location: SUPERCHIPS
3:73 is a good upgrade, good midrange and littel fuel economy loss.
4:56 if you want some real lowend grunt. You will sacrafice your top speed and mileage with this gear.

Ron

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coopertiresux
 Post subject: Re: TIRE/GEAR CALIBRATION
 Post Posted: Thu Apr 05, 2012 6:01 pm 
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Joined: Sat Mar 10, 2012 5:34 pm
Posts: 16
Location: S.W. Georgia
RON @ SUPERCHIPS wrote:
3:73 is a good upgrade, good midrange and littel fuel economy loss.
4:56 if you want some real lowend grunt. You will sacrafice your top speed and mileage with this gear.

Ron


Thanks for the info Ron. If I do a gear swap, I'll let you know how it goes.
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