If your tyres bead is not sitting in the middle of the rims, they're extremely hard to removed, as illustrated below;
Fair enough. You know what else is shit? Conti innertubes. Stupid removeable cores.
Just tighten them up a bit more.
@TurtleRecall started
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If your tyres bead is not sitting in the middle of the rims, they're extremely hard to removed, as illustrated below;