Tires

Tires

A ring-shaped covering fixed around the wheel-rim of an automobile that both protects it and provides a shock-absorbant cushion to increase vehicle performance and speed.

Industry: Automotive; Rubber

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Tires

Understeer

Automotive; Tires

The handling characteristic in which the front tyres break loose because they are running a larger slip angle than the rear tires. Also known as plowing.

Undertread

Automotive; Tires

Material between the bottom of the tread rubber and the top layer of steel belts; acts as a cushion that enhances comfort.

Unsprung weight

Automotive; Tires

The weight of the parts of a vehicle not supported by its springs, including wheels and tires, outboard brake assemblies, the rear axle assembly, suspension members, springs, shock absorbers and ...

Uniform tyre quality grading standards (UTQGS)

Automotive; Tires

A government-sponsored tyre information system that provides consumers with ratings (from AA to C) for a tire’s traction and temperature. Treadwear is normally rated from 60 to 700.

Valve

Automotive; Tires

A device that lets air in or out of a tire. It is fitted with a valve cap to keep out dirt and moisture, plus a valve core to prevent air from escaping.