Quote:
Originally Posted by Phase
That chart says rolling resistance doesn’t change with speed, but in another thread peiple were saying it goes up with speed but just at a much smaller degree
Another confusing thing is that Julian Edgar said that wind resistance doesn’t actually increase until you hit about 37mph
But I agree, slower on shorter trips is much better and losing a few minutes. But if you’re driving 900 miles in a day, the difference in time between 55 and 80 is huge!
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With some tires, up to standing-wave velocity, the power absorption coefficient is constant, providing a straight line power 'curve.' ( 1996 Honda Accord )
Other tires' coefficients vary with velocity, producing a 'curved' horsepower curve with speed.
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PS: The standing wave occurs above the tire's speed rating, which is above the car's top speed, so technically, one could never experience the self-destruction which can accompany standing wave.