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The quality of tires is always a major concern. There are good touring tires available that should be more than adequate. Since your engine is not putting out enormous torque nor are you kneedragging as in Moto 3, tire cooling should not be a issue. The larger diameter wheel has a longer tire patch but more air drag and mass. Vehicle weight, tire compound, and inflation pressure affect rolling resistance. The high speed HPV racers often use 20" wheels and triathletes typically use 26" wheels rather than the 700C on road racers.
Changing the rear suspension and wheelbase means retuning the the whole set up front and rear for best results. That's half the fun, the other half is when the bike responds like it's an extension of your mind.
Has the frame been checked for alignment since you bought it?
Last edited by Grant-53; 06-15-2012 at 11:48 PM..
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