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I show why it is better to tape wrap road bike handlebars from the ends of the handlebars up to the the middle as opposed to starting in the middle and wrapping down to the ends. There is a reason why the bikes you find in a bike store are all wrapped in one direction over the other.
BTW, this applies to modern cork/gel tapes. Vintage cloth and plastic tapes can be wrapped top down as they are not as prone to rolling.