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fig. 20 Tire Markings
60
WARNING: Clipless pedals are intended for use with shoes specifi- cally made to fit them and are designed to firmly keep the foot engaged with the pedal. Practice is required to learn to engage and disengage the foot safely. Until engaging and disengaging the foot becomes a reflex action, the technique requires concentration which can distract the rider's attention, causing the rider to lose control and fall. Practice engaging and disengaging clipless pedals in a place where there are no obstacles, hazards or traffic; and be sure that you follow the setup and service instructions and warn- ings which came with your pedals.
G. TIRES AND TUBES
1. Tires
Bicycle tires are available in many designs and specifications, ranging from