Same here on folding tires. I keep a 28mm folder in a handlebar bag. It weighs a mere 210 grams. I would rather carry it than have an unridable bike 30 miles from the car. Currently the front tire, for the last 3000 miles or so, is a folder also. This tire is the Continental GP 4000s which I bought and mounted as a test. It rides no better than the Serfas Seca but lasts way longer. In fact, in 3000 miles it shows no appreciable wear so well worth the money.