Thread: speedometer is off, effect on fuel econ?
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Old 05-21-2012, 12:38 PM   #24 (permalink)
gone-ot
...beats walking...
 
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FWIW - tire companies "measure" their published tire revolutions-per-mile (rpm) at 45 mph speed, with the tires specified "load" rating applied.

EPA does their N/V measurements at 50 mph.
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