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Bridgeburner
That is if you look at the wheels on their own.Sorry Boys,....
Therefor the heavier the wheel and tire combo, the more fuel it takes to run it and more brakes are required to stop it.
TLC Dan
Now, if those wheels are on the road and not spinning freely; you move, accellerate and brake the whole vehicle, not only the wheels. And it takes just as much effort per gram to move, whether it is rotating or moving in a straight line.
So yes, heavier wheels take more effort, but not as much as your toolbox at the back.
Isn't there a Physics Professor in here, who is used to explaining to all kinds of students? I went only up to college level.