Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
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Trad separation on tires, especially HP tires isn't all that rare. Many HP tires are not molded in one piece over the tire plies, but are separately molded treads which are rubber cemented on. The best tires are made this way so the fabric isn't weakened by heat.
Use rubber cement, or something like 3m FastTaK to glue it back and you'll be good to go. The way to do this is to inflate the tire, peel back the tread, and coat both the tread and body with glue, let it dry completely, then carefully rolling the tread into place. Work carefully, it's a contact bond, so you only get one shot.
BTW- the 2 main causes of this problem are overloading/underinflation, and riding in the rain. I ride tubulars, and have been dealing with tread separation for 45 years. Just another minor inconvenience. Your tire is safe as long as the structural cloth plies don't show any damage. You can tell because when they weaken the tire will get lumps or twists, this happens long before they let go.
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