Quote:
Originally Posted by Phase
Apparently the diff between the 19 inch and the 17 inches is HUGE on the new Prius for steady state mpg highway testing
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Once up to a steady-speed cruise velocity, any difference in tire-wheel mass has virtually zero impact on mpg. As long as velocity is constant, which it ought to be, any difference in the amount of kinetic energy stored within each of the four 'flywheels' remains 'invisible' to the energy balance equation. To say differently belies Wayne's total ignorance of the topic.