Jason, I'll keep an eye from now on to make sure my stem is sitting squarely and make sure the nut is snug. It sounds like that may have been the issue. I'll also plan on putting in a new bladder after my next tire change - cheap insurance.
Originally Posted by obrianmcc
I've noticed anymore that I only seem to get a year or so out of my bicycle tubes ... always failing around the valve stem ... probably the same Chinese factory making all of the tubes these days
I've had an issue a few times in the past on my mnt. bike with valve stem flex but more so with the schraeder valves. The presta valves with their lock-nut helps prevent it. My tubes do only last a year though because I use slime tubes and get goat head punctures. I should probably go tubless.