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Speedometer calibration

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Old Apr 12, 2013 | 06:48 PM
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Djphelan01's Avatar
Djphelan01
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Speedometer calibration

I recently bought a 2000 f250 and it has what I believe to be stock tire sizes on it. When I drive it seems like the speedo is saying I'm going faster than I actually am. Is there and easy way to check it other than with a radar? If the calibration is off what is the fix? Is it too costly to fix and I should just live with it or is it probably just me thinking I'm going slower than what the speedo says?
 
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Old Apr 12, 2013 | 07:07 PM
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Bigpipes 35's Avatar
Bigpipes 35
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From: Forest lake minnesota
Originally Posted by Djphelan01
I recently bought a 2000 f250 and it has what I believe to be stock tire sizes on it. When I drive it seems like the speedo is saying I'm going faster than I actually am. Is there and easy way to check it other than with a radar? If the calibration is off what is the fix? Is it too costly to fix and I should just live with it or is it probably just me thinking I'm going slower than what the speedo says?
Find somebody that has a GPS and check it that way. The speedo reads off of the ring gear on the rear axle so unless you are running something other that stock tires it should be accurate. Now I have heard that ford speedos are typically calibrated to be 2 or 3 miles an hour faster than your actuall speed but I have no proof..
 
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