Originally Posted by
kmoy2002
For those who don't know, run-flats on cars are tires that have a super thick sidewall for use when the tire gets punctured. Since the sidewall is so thick, the vehicle is still available to run until it can get to a location where repairs can be made.
Car tires are more or less square, so a strong/thick sidewall works in such a situation. Bicycle and motorcycle tires are more rounded to allow for leaning in turns, and thus the actual sidewalls are much shorter. A bicycle tire with run-flat-style sidewalls might keep you from riding on the rim, but would provide handling unstable and dangerous enough to be nearly useless.
The best you can do is make sure that the bike itself isn't causing the flats (crap stuck in the tire, burrs on the end of the spokes, sufficient rim tape, etc) and use some good, puncture-resistant tires. For example, I've been using Gatorskins and Randonneurs on some relatively terrible glass and rock strewn roads for two years, and have gotten a grand total of one flat in that time.