speedo correction - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 01-18-2000, 05:25 PM
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speedo correction

I have a 91 S10 with a tow kit and the factory larger tires. It seems my speedometer does not reflect the correct speed. Do the larger FACTORY tires P235 75r 15 change my actual speed? Thanks for insight.

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post #2 of (permalink) Old 01-19-2000, 10:50 PM
 
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Re: speedo correction

If there is NO change to your factory specs, meaning either tires or gear ratio, then you should have the correct speed indicated from the factory.

I would take it to a calibration shop and have them check it out. It's possible, if you have a gear driven speedo cable (from the transfer case) that it's worn out. If you have the electric pickup type, then you'll need to have it calibrated by a GM techie type.

Hope that helps

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