Glossary

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Rim: The metal hoop which holds the tire and tube, which is attached to the hub by spokes.
Rim strip: A strip of rubber, plastic or cloth used in clincher type rims that protect the inner tube from being punctured by wear against the tops of the spoke nipples or the rim.
Rolling a tire: A situation in which a tubular tire can roll off the edge of the rim while cornering. These tires are glued to rims that are not as concave on their outer surface as conventional rims. Rolling a tire is usually caused by improper gluing, but can happen in unusual cornering situations, such as hitting a stone or edge in the pavement while cornering. With properly glued tubular tires, rolling a tire is not common.