Old 07-11-18, 02:57 PM
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The OP did say that the pump was wonky. So if he overinflated the tire and the tire/rim combo is a little loose, it could potentially blow off. Add to that that on July 1st the temps were like 100F here in NYC. The second blow out was probably caused by the first. I just had another thought on re-reading this. Did you damage the rim in any way recently? Any minor spills that you didn't give any thought to?

I blew out a tire on Saturday, July 7, but on inspection I found a small tear and it was a tire that needed replacing. I also recall having a small problem when pumping and maybe I overinflated it. It wasn't a pop but a pfft pfft pfft, and it was only 2 miles into what was to be a 100 mile ride. My wife picked me up and drove me to the LBS when it opened and I put a new tire on and did 75 of those hundred. I ran out of time, good roads and patience to finish the 100 but it was still a good ride.
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