Homepage - Tyrebay Direct Glossary

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AIR PRESSURE

The measurement of the force exerted by the air inside a tyre. It can be measured in pounds per square inch (PSI) or kilopascals (kPa).

ALIGNMENT

Refers to the correct angle settings of suspension components – the 3 alignment settings are caster, camber and toe. This is done to maintain specifications engineered by the vehicle manufacturer for optimum performance.

ANCHORED BEADS

Ply and flipper construction that locks beads in place in the tire. Rubber-coated cord fabric is wrapped around high tensile strength steel wire, which has been insulated with rubber. The ends of the fabric, which are several inches in length, are then carried far up into the sidewall of the carcass and locked in by the plies when the tire is vulcanising.

ASPECT RATIO

A numerical term, which expresses the relationship between the standing height of the tyre and the cross section width. For example: - An Aspect Ratio of 50 means the tyre section stands approximately 50 percent as high as it is wide between the sidewall.

ASYMMETRIC

When opposite sides of a tyre’s tread pattern are not identical.

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