If they haven’t shipped your Challenge tires yet, google a little, and find they have a reputation to shed their tread. But folks just glue it back on so maybe no biggie. BEAUTIFUL BIKE. Since March, and without commuting, 95 % of my miles are on Tubulars. Continental Sprinter on the Medici and Victoria Corsa G+ on the Sachs. Glue is the way to go. Tape seems like trouble so I’ve never tried it.