Under inflation can ,and will, cause "pinch" flats.
Best plan is to pump your tires hard as a rock for a easier pedaling (less rolling resistance) and no pinch flats.
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My preferred bicycle brand is.......WORKSMAN CYCLES
I dislike clipless pedals on any city bike since I feel they are unsafe.
Originally Posted by krazygluon
Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred, which one would you rather have under your butt at 30mph?