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GLOSSARY OF TIRE
TERMINOLOGY
*Tire label: A label showing the original
equipment tire sizes, recommended
inflation pressure and the maximum
weight the vehicle can carry.
*Tire Identification Number (TIN): A
number on the sidewall of each tire
providing information about the tire
brand and manufacturing plant, tire size
and date of manufacture. Also referred
to as DOT code.
*Inflation pressure: A measure of the
amount of air in a tire.
*Standard load: A class of P-metric or
Metric tires designed to carry a
maximum load at set pressure. For
example: For P-metric tires 35 psi
(2.4 bar) and for Metric tires 36 psi
(2.5 bar). Increasing the inflation
pressure beyond this pressure will not
increase the tire’s load carrying
capability.
*Extra load: A class of P-metric or Metric
tires designed to carry a heavier
maximum load at 42 psi (2.9 bar).
Increasing the inflation pressure beyond
this pressure will not increase the tire’s
load carrying capability.
*kPa: Kilopascal, a metric unit of air
pressure.
*PSI: Pounds per square inch, a standard
unit of air pressure.
*Cold tire pressure: The tire pressure
when the vehicle has been stationary
and out of direct sunlight for an hour or
more and prior to the vehicle being
driven for 1 mi (1.6 km).
*Recommended inflation pressure: The
cold inflation pressure found on the
Safety Compliance Certification Label
(affixed to either the door hinge pillar,
door-latch post, or the door edge that
meets the door-latch post, next to the
driver's seating position), or Tire Label
located on the B-Pillar or the edge of the
driver door.
* B-pillar: The structural member at the
side of the vehicle behind the front door.
*Bead area of the tire: Area of the tire
next to the rim.
* Sidewall of the tire: Area between the
bead area and the tread.
*Tread area of the tire: Area of the
perimeter of the tire that contacts the
road when mounted on the vehicle.
*Rim: The metal support (wheel) for a
tire or a tire and tube assembly upon
which the tire beads are seated.
TIRE REPLACEMENT
REQUIREMENTS
Your vehicle is equipped with tires
designed to provide a safe ride and
handling capability.
381
2023 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202207, DOM
Wheel and Tire Information
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