Originally Posted by
theHomelessJedi
I know this has probably been asked on here before. I am thinking about buying new tires before my first century ride in september. My bike, Specialized Allez Sport, came with 25c tires. I asked one of my friends who has been riding longer and he seems to think that there is plenty of room for adjustment to run 28c tires if I took it to my LBS. Anyone have any experience with this transition??
Many bikes can run 28c tires. You'll only know if you try. It's not the width that's typically the problem. It's the height of the tire. It'll run close to the brake bridge in the rear.