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How to Recalibrate/adjust your speedometer

FellowTraveler

Well-Known Member
Messages
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Location
Nature Coast
#21
You might want to measure your actual loaded tire height from road surface to center of hub, I suggest this because its critical in final calibration.

The tire you have 23585/16 equates to 31.73" diameter average however a loaded tire maybe 28" (as example) there various debates about this however; I have always had to adjust for the smaller diameter of the loaded tire (s).

I'm running 295/75/16 advertised as 33.5" loaded they are 31.5" "loaded measurement requires tire to be on proper width wheel and the entire thread contacting the road surface (tarmat).
 
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