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Maximum loaded vehicle weight
means the sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight, and
(d) Production options weight
Maximum (permissible) inflation pressure
means the maximum cold inflation pressure
to which a tire may be inflated. Also called
"maximum inflation pressu re."
Normal occupant weight
means 150 lbs . (68 kilograms) times the
number of occupants seated in the vehicle up
to the total seating capacity of your vehicle .
Occupant distribution
means distribution of occupants in a vehicle .
Outer diameter
means the overall diameter of an inflated new
tire.
Overall width
means the linear distance between the exter i-
ors of the sidewalls of an inflated tire, includ-
ing e levations due to labeling, decorations, or
protective bands or ribs.
Ply
means a layer of rubber-coated
para llel cords.
Production options weight
means the comb ined weight of those installed
regular production options weighing over 5
lbs . (2 .3 kg) in excess of those standard items
which they replace, not previously considered
in curb weight or accessory weight, including
heavy duty brakes, ride leve lers, roof rack,
heavy duty battery, and specia l trim .
Radial ply tire
means a pneumatic t ire in which the ply cords
that extend to the beads are laid at substan-
tially 90 degrees to the centerline of the
tread.
Tires and wheels
233
Recommended inflation pressure
see~
page 232, Cold tire inflation pressure.
Reinforced tire
means a t ire design to operate at higher loads
and at higher inflation pressures than the cor-
responding standard tire. Reinforced tires
may be identified as "XL", "xl", "EXTRA LO AD",
o r "RF" on t he sidewall.
Rim
means a metal support for a tire or a t ire and
tube assembly upon which the tire beads are
seated.
Rim diameter
means nom inal d iameter of the bead seat. If
you change your wheel s ize, you w ill have to
purchase new tires to match the new rim di-
ameter.
Rim size designation
means rim diameter and width.
Rim width
means nom inal distance between rim f la nges.
Sidewall
means that portion of a tire between the
tread and bead.
Speed rating (letter code)
means the speed at which a tire is designed to
be driven for extended periods of time. The
ratings range from 93 mph (150 km/h) to
186 mph (298 km/h)
~
page 243 .
You may
not find this information on all tires because
it is not requ ired by law.
The speed rating letter code, where applica-
ble, is molded on the tire sidewall and indi-
cates the max imum pe rm issib le road speeds
~ .&.in Winter tires on page 247 .
Tire pressure monitoring system*
means a system that detects when one or
more of a veh icle's tires are underinflated
and
illuminates a low tire pressure warning tell-
tale.
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