Originally Posted by kb5ql
What is currently limiting me on the Swift is the upper gearing and tire selection. Granted there is a slight (3% according to Xootr) rolling resistance penalty to smaller wheels, but what I really need is a set of 120psi tires and an approx. 110-120 top gear inch to better compare to my road bike. 95% of the time I'd say I average the same speed as my road bike....
You could try a pair of Schwalbe Stelvios, they're probably the fastest / highest pressure 406 tires.
Personally I think the ride on that would be unadulterated punishment, though....