How old are your tires? I had a problem last year that the tires had worn a tear right at the rim bead. You could not see it easily and only during a ride would the tire flex enough so that the tube could blister through the tear and burst. It took me three tubes until I took the tire completely off and flexing it saw the tear.
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The problem with the gene pool is that there is no lifeguard and the shallow end is much too large
2013 Noah RS