Toyota PRIUS ALPHA 2012 Quick Reference Manual page 602

6-1. Specifications
Tire related term
Section width
Sidewall
Sidewall separation
Snow tire
Test rim
Tread
Tread rib
588
The linear distance between the exteriors of
the sidewalls of an inflated tire, excluding ele-
vations due to labeling, decoration, or protec-
tive bands
That portion of a tire between the tread and
bead
The parting of the rubber compound from the
cord material in the sidewall
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 (
least one sidewall
The rim on which a tire is fitted for testing, and
may be any rim listed as appropriate for use
with that tire
That portion of a tire that comes into contact
with the road
A tread section running circumferentially
around a tire
Meaning
) on at