A good basic replacement tire for 27 Inch wheels. The Super HP’s inverted tread pattern diverts water while good solid rubber prevents flats. A raised center tread allows speed on straights while extra tread on the sides provides added confidence in turns. This version features a puncture protection beneath the tread to keep out broken glass. Cheng Shin CST470 Max PSI 90. Wire bead. 472 grams. 27 x 1 14 Inch 32-630 ISO.