Rotational Mass - Performance

[OldSchoolFormula]

I was having a rather heated discussion with a few friends of mine on the benefits of reducing rotational mass and the old 1 pound of rotational mass is worth 10(?) pounds elsewhere on the car. What it came down to was the difference in the front wheels versus the rears in a RWD application. I argue that reducing the weight of the front wheels is just as important as reducing the weight of the rears as rotational mass is rotational mass. They argue that the front wheels are not nearly as important because they are not connected to the drivetrain and thus are effectively negligible in decreasing performance. Basically the extra weight of the wheels would be the same as the weight anywhere else on the car. As far as I'm concerned the drivetrain has to move the front wheels at the same rate as the rears and thus a heavier front wheel is just as detrimental as a heavy rear.



Input?