Originally Posted by
urbanknight
I pumped it up to 5psi over the tire's max on the sidewall, but afraid to go much higher than that.
The manufacturers test at double the sidewall rating. You won't damage the tire if you only pump it up there momentarily. Seriously, this works very well in many cases. Just watch as you inflate to see if it wants to pop off, and if it does, then stop inflating.