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Speedometer Gear Calculation

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Old 06-20-2009, 06:10 PM
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Default Speedometer Gear Calculation

Does anyone know the correct speedometer gearing for 4.10's and 30" tires? I'm getting three different answers from three different sites ranging form 36 tooth to 38 tooth.
Old 06-20-2009, 08:57 PM
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http://www.go.jeep-xj.info/HowtoSpeedoGears.htm
Old 06-20-2009, 10:02 PM
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36 is probably the best. 35 tooth on 4.10 and 31 inch tires is perfect.

I have a 38 tooth and I can tell you it would be way off.
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