BRZ _ U . book 400 ページ 2022 年 3 月 29 日 火曜日 午後 3 時 59 分
400
Tire Information � Rim type designation
The industry of manufacturer ’ s designation for a rim by style or code .
� Rim width
Nominal distance between rim flanges .
� Section width
The linear distance between the exteriors of the sidewalls of an inflated tire , excluding elevations due to labeling , decoration , or protective bands .
� Sidewall
That portion of a tire between the tread and bead .
� Sidewall separation
The parting of the rubber compound from the cord material in the sidewall .
� Snow tire
A tire that attains a traction index equal to or greater than 110 , compared to the ASTM E1136-93 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 that is marked with an Alpine Symbol “ ” on at least one sidewall .
� Test rim
The rim on which a tire is fitted for testing , and it may be any rim listed as appropriate 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 .
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