I have a 2003 Trek 1200 with a flat bar. It is an aluminum frame with a carbon fork. I am trying to make it more comfortable for commuting. The problem with the Trek is that it doesn't have much extra space for a larger tire. It has a 700x25 now and looks like it might accommodate a 28, or maybe a 32, but I'm not sure. I am looking for tires that will soften the ride. Has anyone had any success doing this with a Trek 1200? Any other ideas for reducing road chatter with long commutes? Modifications? Thanks!