I did inflate a new Miyata 24" tire (about 40 psi max.) to 90 psi. It
lasted about one day, when the cords in one sidewall broke, allowing
the tube to split half several feet making it useless as well.
>Believe it or not you'll wear em out in less
>time at the much higher pressures.
Sometimes the pressure can to too high and the tire may not have a
chance to wear out.
After losing a new 40 psi tire at 90 psi, 70 psi for such a tire is my
own new personal maximum for such a tire. That's still a 75%
overinflation!
Sincerely,
Ken Fuchs <kfuchs@winternet.com>