Originally Posted by
Ron Damon
This all depends on the weight of the rim, tire and tube, as angular momentum is a function of not only radius, but also mass.
A 406 wheel can be just as large and maintain just as much momentum as a 451 wheel, depending on the weight.
True. My bike has a bit more steering stability with slightly larger and heavier tires than original, plus, by raising up from the ground a bit, fork trail also increases. (Which is why, tire size must be known when evaluating a given trail value, if you want to change tire sizes.)