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Old 06-30-2009, 01:09 PM   #1
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Speedometer Gear

What speedometer gear do I need for a stock 99 Sahara 4.0 Auto with 235/75R15 tires. It came with bigger tires that were bad, when I put these on my speedo is off so I assume they put in a new gear for the bigger tires.
Mike

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Old 06-30-2009, 01:30 PM   #2
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Depends...what is your axle ratio?

Should be 3.73's being a sahara but some have been known to have 3.07's

So....what you have?

If you need to know how to check what axle ratio you have let us know.

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Old 06-30-2009, 01:35 PM   #3
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Here is a reliable chart.

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Old 06-30-2009, 01:57 PM   #4
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3.07, my tires dont fall in that chart.
Mike
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Old 06-30-2009, 02:09 PM   #5
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A little interpolation of the chart with your 29" tires says you will probably be fine with a 29 tooth gear.
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Old 06-30-2009, 02:12 PM   #6
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Yep...Jerry beat me again. lol

29 tooth bud.
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Old 06-30-2009, 02:32 PM   #7
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thanks guys, 29 tooth it is

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