Various technical senses. A wheel track, a rut (dialect); the transverse distance between the two wheels of a cart or other vehicle; also, the width…

spec. The outer covering of a pneumatic tyre.

The side of a vehicle's tyre, typically untreaded and often marked or coloured distinctively; (more fully sidewall tyre) a tyre with distinctive…

a band made of linen pressed in layers to protect a cycle tyre.

figurative. = cuirass band n. at compounds.

U.S. A type of tread on a tractor tyre, designed to give extra traction. Now rare.

Originally and chiefly North American. A strip of reinforcing material (esp. steel) fitted beneath the tread of a tyre for greater durability.

A layer of reinforcement in a rubber tyre.