After last week's test of the best tyre width for riding on cobbles, Dan and Matt decided to find out whether varying your tyre pressure would make more of a difference. And to make the test more thorough, they headed to the cobbles of Paris-Roubaix
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A stretch of the brutal Carrefour de l'Arbre cobbles form the "lab" for today's test. Matt and Dan did three runs each, dropping their tyre pressure from 100psi, to 70psi, and finally down to 45psi! But which pressure is fastest with 28mm tyres.
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