Originally Posted by crank_addict

^ To be fair, my concerns are with a tandem and limited selection for 27" application. Gumwall for style points. I mentioned some of the problems in another thread so won't repeat too much here. The longevity issue is not talked much by test / journalist for heavy weight usage and sidewall flare out. Those bulging sidewalls are getting an extra workout.

So the typical answer by most is to further inflate, in this case, over the spec rating.

Add the problem of an overinflated clincher on a hot ambient day, brakes that work extra hard, creating more heat and to the tire. I find it difficult to believe this type of situation is going to be easy on such tire. Those sidewalls have a shred or burst point but even if they hold, it can't help in longevity. Its like driving your car with over inflated tires trying to compromise for a large load. That tire is going to run hotter and wear out quicker.