Tyre

The rubber part of the wheel which contacts the ground. The construction can be bias-ply, bias-belted, or radial. The plies are made of rayon, nylon, and polyester. Belting can be fibreglass, steel, or kevlar. The rest of the tyre is hard rubber.

Tyre Bead

That portion of the tire that bears against the rim flange. The bead has a number of turns of steel wire in it to provide great strength.

Tyre Gauge

An instrument for determining the pressure in a tube or tyre.

See also: Independent Suspension, Tyre Tread Pattern, Wheel.