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Old 03-14-2012, 03:34 PM   #1
Join Date: Feb 2012
Location: Newport News, VA
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speedo gear question

I know i have 31 10.50's on the jeep, but how do I know how many teeth to get?

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Old 03-14-2012, 03:51 PM   #2
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Old 03-14-2012, 06:43 PM   #3
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You need to know two things: your tire size and your gear ratio. It should be stamped on a tag on the differential cover, or you can do the "jack up the rear end and spin the tire once to see how many times the driveshaft spins" trick. Either way, check the 'For Sale' forum for used ones - $40 is pricy for such a little pice of plastic!
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