how are y'all getting all these blowouts? This past month has been the March of the flats for me, 4 flats in 2 weeks. All of them were glass punctures. The slowest one lasted halfway down a bridge, the fastest one gave me a good 10-20 seconds of hissing before I was on top of the rim.
I only "blowout" MTB tubes, if I'm riding them.