Originally Posted by maxcooper

I suppose I agree with some of the spirit of what the guy with the 12.5% paper is saying, but since he doesn't have any inertial losses in his 12.5% cap, he must either be talking about losses for brake dynos or his analysis is incomplete. Or, I suppose, he might think that none of the inertial losses are worth considering. But that doesn't seem right. Standing by the 12.5% cap on the grounds outlined in that paper is not a very sound position.

Also, I was not talking about the losses due to the rolling resistance of the tire (tire deformation). I am talking about simply accelerating the wheels and tires from a low RPM to a high RPM in the time it takes to do a dyno run. I suspect that it is not an insignificant number (and it is one that might be enlightening to calculate).

-Max