I have a Cannondale touring bike with 27" x 1.25" tires on it. They are designed for an air pressure of 100 PSI (6.8 bar) which means I feel every bump on the country roads around here.
I would like to get a crossover bike.. but I hate to get rid of my trusty Cannondale. What would I need to do to put crossover style tires on the bike? What is comparable to the 27"?