Contour Enthusiasts Group Archives Forums Modifications Duratec Performance Acceleration with 18's

I was thinking about this, and if the 18" wheel tire combination is lower in wieght, how can the moment of inertia be higher if the diameter is the same or less?

The Rev is right, just because the wheel is 18" doesn't mean has a greater circumference when combined with the tire.

One more thought on this. If the wheel is lighter, and the wheel/tire combination is lighter, and the circumference is the same or less, then how is the moment of inertia greater?

I haven't taken a physics course since 1983, so I'm a bit rusty at this.

TB