Lexus RZ450E 2023 - Page 578

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10-1. Specifications
Measuring rim
The rim on which a
tire is fitted for physi-
cal dimension
requirements
Open splice
Any parting at any
junction of tread,
sidewall, or inner-
liner that extends to
cord material
Outer diameter
The overall diameter
of an inflated new
tire
Overall width
The linear distance
between the exteri-
ors of the sidewalls
of an inflated tire,
including elevations
due to labeling, dec-
orations, or protec-
tive bands or ribs
Passenger car tire
A tire intended for
use on passenger
cars, multipurpose
passenger vehicles,
and trucks, that have
a gross vehicle
weight rating
(GVWR) of 10,000
lb. or less.
Ply
A layer of rub-
ber-coated parallel
cords
Ply separation
A parting of rubber
compound between
adjacent plies
Tire related term Meaning
Pneumatic tire
A mechanical
device made of rub-
ber, chemicals, fab-
ric and steel or other
materials, that, when
mounted on an
automotive wheel,
provides the traction
and contains the gas
or fluid that sustains
the load
Radial ply tire
A pneumatic tire in
which the ply cords
that extend to the
beads are laid at
substantially 90
degrees to the cen-
terline of the tread
Reinforced tire
A tire designed to
operate at higher
loads and at higher
inflation pressures
than the corre-
sponding standard
tire
Section width
The linear distance
between the exteri-
ors of the sidewalls
of an inflated tire,
excluding eleva-
tions due to labeling,
decoration, or pro-
tective bands
Sidewall
That portion of a tire
between the tread
and bead
Sidewall separation
The parting of the
rubber compound
from the cord mate-
rial in the sidewall
Tire related term Meaning