I always damage the tube when I try to use tire levers.
I swab a little soapy water on the inside of the last bit of the bead with a kitchen sponge. Not enough to get the outside of the bead wet -- so my thumbs still have grip -- just enough to lubricate the bead. Works every time.
When changing a flat out on the road the tire has stretched out enough that it can be removed and replaced very easily.
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