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. Measuring rim
The rim on which a tire is fitted for
physical dimension requirements.
. Normal occupant weight
150 lbs (68 kg) times the number of
occupants specified in the second
column of Table 1 that is appended
to the end of this section.
. Occupant distribution
Distribution of occupants in a vehi-
cle as specified in the third column
of Table 1 that is appended to the
end of this section.
. Open splice
Any parting at any junction of tread,
sidewall, or innerliner that extends
to cord material.
. Outer diameter
The overall diameter of an inflated
new tire.
. Overall width
The linear distance between the
exteriors of the sidewalls of an
inflated tir e, including elevations
due to labe ling, decorations, or
protective bands or ribs.
. Passenger car tire
A tire intended for use on passen-
ger cars, multipurpose passenger
vehicles, and trucks, that have a
gross vehicle weight rating (GVWR)
of 10,000 lbs (4,535 kg) or less.
. Ply
A layer of rubber-coated parallel
cords.
. Ply separation
A parting of rubber compound
between adjacent plies.
. Pneumatic tire
A mechanical device made of rub-
ber, chemicals, fabric 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.
. Production options weight
The combined weight of those
installed regular production options
weighing over 5.1 lbs (2.3 kg) in
excess of those standard items
which they replace, not previously
considered in curb weight or acces-
sory weight, including heavy duty
brakes, ride levelers, roof rack,
heavy duty battery, and special
trim.
. Radial pl y tire
A pneumatic tire in which the ply
cords that extend to the beads are
laid at substantially 90 degrees to
the centerline of the tread.
. Recommended inflation pres-
sure
The cold inflation pressure recom-
mended by a vehicle manufacturer.
. Reinforced tire
A tire designed to operate at higher
loads and at higher inflation pres-
sures than the corresponding stan-
dard tire.
. Rim
A metal support for a tire or a tire
and tube assembly upon which the
tire beads are seated.
. Rim diameter
Nominal diameter of the bead seat.
. Rim size designation
Rim diameter and width.
Consumer information and Reporting safety defects/Tire information
13-7
– CONTINUED –
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