Quote:
Originally Posted by dave1surf
yes, weight is an issue.. however other factors play a role.
Consider this; equal weigh wheels with the same weight (mass). The 18 will have a larger diameter. so more of it's mass is positioned at a further distance from the rotation point. This increases it's Moment of Inertia. Therefore more Angular Momentum (Torque) is needed to accelerate the larger wheel.
So a larger wheel with the same weight and tire, will accelerate slower when given the same torque.
That being said, a larger tire can usuall accommodate wider tires...
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The spec the tire manufacturor gives for the heigth of the tire used; is the factor to consider when speculating your theory, "Consider this; equal weigh wheels with the same weight (mass). The 18 will have a larger diameter. so more of it's mass is positioned at a further distance from the rotation point. This increases it's Moment of Inertia. Therefore more Angular Momentum (Torque) is needed to accelerate the larger wheel.".
