I Might Just Know What I'm Talking About
Join Date: Oct 2000
Location: C-ville, VA
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For those physics lovers!
Found this on the Bimmer board.
"The moment of inertia for a round object is equal to
I=MR^2 where I=inertia, M=mass(in kg), and R=radius of the
rotating object. As you can see, the polar moment of inertia
(the resistance of the wheel to movement) is equal to the mass
multiplied by the square of the radius. This makes a wheels
size much more important than its weight in terms of measuring
a loss of torque at the wheels! A 17" wheel would have to be
roughly half the weight of a 13" wheel to have the SAME inertia!
On the other hand, you can fit bigger brakes in the 17 incher
Hope that was enlightening!
Jeep...need I say more?