Produced by combining the latest, tested, ultimate technologies to create a more robust, longer-lasting road tire while maintaining the speed, comfort and control you know from Challenge's handmade construction.
Excellent cut & puncture-resistant qualities with both our GANZO PPS under the tread and our CORAZZA Armor for improved sidewall protection
Specifications
Flat Protection
Tread
Intended Use
Road
ISO Diameter
622 / road / 29"
ISO Width
25, 27
Labeled Size
700 x 25, 700 x 27
Tire Bead
Clincher, Folding
Tire Diameter
700c
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I'm older. Rode sew ups at eight y.o. Gluing them myself at 12 y.o. Bought these. Used latex, talcum. Worked carefully on seating. It was late and tested everything on the flats. A OK. Next day...all set!!! Going slow down hill outside house. KABOOM Tire blows out. Lucky I'm not dead. BTW I PUT tires on for two days no tubes. Just to let them form. Got great feedback from challenge. Mount with butyl. Ride for awhile then put latex on. Too much work too late. One tire ruined with blowout.