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Design Rim |
A rim
with a specified width; used to measure tire dimensions.
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Directional Stability
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The
ability of a car to travel in a straight line with a minimum
of driver control.
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Dog Tracking |
A
condition where the rear wheels do not follow the path of
the front wheels.
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DOT |
A
tire branding symbol which denotes the tire meets
requirements of the Department of Transportation.
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Double A-Arm |
A
suspension system which uses two "A"-shaped links or arms of
unequal length to attach the upright supporting the wheels
to the frame.
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Drive Wheel Application
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Describes tires which are designed specifically for optimum
performance on drive wheels.
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Dual Compound Tread
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A
tire tread with two rubber compounds.
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Duals |
Two
tire and wheel assemblies, mounted on one side of an axle.
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Durometer |
A
measure of the hardness of a rubber compound; its resistance
to penetration of a spring-loaded blunt needle.
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Dynamic Balance
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Balance in motion. The balance of a wheel while it is
rotating. a condition in which a tire and wheel assemble has
weight distributed equally on both sides of the wheel's axis
of rotation.
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E |
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E.C.E. Symbol
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A
tire performance certification based on regulations
developed by the Economic Commission for Europe concerning
physical dimensions, tire branding requirements, and high
speed endurance.
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Eccentric Mounting
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A
condition in which a tire is unevenly mounted or cocked on
the hub of a wheel.
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ETRTO
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European Tire and Rim Technical Organization.
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Extra Load
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A
P-metric tire with a maximum inflation of 41 psi. This
higher pressure than a standard loaded tire permits a
greater load capacity.
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Extrusion
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The
process of forcing a material through an orifice to obtain a
length of material; used to fabricate tire components.
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