Quote:
Originally Posted by j-c-c
So, if I'm reading this chart correctly, rolling coefficient at 44psi increases nearly 4 times as speed changes from 62 to 87mph?
That surprises me.
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It doesn't sound like what I've always understood.
Why would the coefficient change as you drive? From what I've always understood it stays about the same.
UNLESS we are talking about power to overcome rolling resistance. That does increase with the square of the velocity.
But the force to overcome rolling resistance should be about the same. The amount of energy per measure of distance will be about the same.
The power increases because the faster you go the more energy per measure of distance gets eaten up quicker as you travel more distance per measure of time.