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

Bias-ply

Automotive; Tires

A type of tyre with crossed layers of ply cord running diagonally to the centre line of the tread.

The diameter of an imaginary circle drawn through the centre of each lug nut hole and then measured from two holes that are directly across from each other. The measurement is used in selecting the ...

Braking torque

Automotive; Tires

A technique practised by drag racers and road testers to improve their off-the-line acceleration; applying the brake and throttle at the same time, increasing the engine rpm until release of the ...

Tread buffing

Automotive; Tires

Scraping rubber off the tread. Also known as shaving.

Rim drop

Automotive; Tires

Also called drop center, a change (drop) in the rim profile between the rim flanges in which the bead area of a tyre is placed during the mounting process. This allows the tyre to be mounted on the ...

Tread depth

Automotive; Tires

The depth of usable tread rubber measured in 32nds of an inch. If a tyre comes new with 10/32nds of rubber, you have 8/32nds of usable rubber. tyres must be replaced when the wear bars are visible at ...