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Old 06-20-2013, 08:04 AM   #32 (permalink)
aardvarcus
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One thing that I am sure most of you are aware of, but it is worth pointing out, is that tires change diameter as they wear. On a 25” OD tire, if you wear it half way (suppose 6/32 tread wear) the radius would change (6/32”)/(12.5”)=1.5%. Thus even if you were able get the absolutely perfect speedometer adjustment done initially, as your tires wear you will start to drift away.
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