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2007 SEQUOIA from Aug. ’07 Prod. (OM34462U)
Tire related term Meaning
Snow tire
a tire that attains a traction index equal to or greater than 110, compared to
the ASTM E−1136 Standard Reference Test Tire, when using the snow traction
test as described in ASTM F−1805−00, Standard Test Method for Single Wheel
Driving Traction in a Straight Line on Snow−and Ice−Covered Surfaces, and
which is marked with an Alpine Symbol ( ) on at least one sidewall
Test rim
the rim on which a tire is fitted for testing, and may be any rim listed as appropri-
ate for use with that tire
Tread that portion of a tire that comes into contact with the road
Tread rib a tread section running circumferentially around a tire
Tread separation pulling away of the tread from the tire carcass
Treadwear indicators(TWI)
the projections within the principal grooves designed to give a visual indication
of the degrees of wear of the tread
Wheel−holding fixture the fixture used to hold the wheel and tire assembly securely during testing
07 05.22
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