thank you wanderer for your always helpful, reliable advice. i really appreciate it. that's a good point. sheldon brown mentioned in his article that bicycle companies these days put very wide tires on narrow rims to save weight. to this i agree with grant peterson...a frame should weigh what it ought to weigh. i called up trek and they suggested a 35 mm is how wide we should go. right now i'm checking out a mountain bike since i already have a hybrid.