10 ways the pros modify their bikes for the cobbles Mar 31, 2017 There's more to it than 28mm tyresThere's more to do than fit 28mm tyres when riding the cobbles, and professional riders and mechanics have plenty of tricks to improve comfort on the pave. Tags: Cobbled Classics General News Paris-Roubaix Pro Team Bikes Product News Tour of Flanders Share 0 Share on Facebook Tweet Tweet on Twitter +1 +1 on Google Plus