I ride a Trek 4900 to work 5.3 miles one way, I had to switch out the tires for Trek Police tires and gain 3 miles per hour faster. The road in places are rough and have to jump a curve or two, the bike works fine, but considering on buying a Cannondale T800 or the T2000, because they can carry more weight, stronger than a road bike, and are faster than mountain bikes. In my opinion, a Tour bike is the all around bike for short commuting and going long distance. What ya'll think?
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