Quote:
Originally Posted by Dr. Jerryrigger
Thanks for the write up.
Theoretically, if your on level ground, with predictable losses, starting from 55mph, with a 100%efficient engine and drive train; you should see no difference.
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Not true. In theory (and in practice) rolling resistance is proportional to vehicle weight. The question is whether the improvement in engine efficiency from easier P&G outweighs the increased rolling resistance. For most, the answer is no.