(D) Construction Code:A letter code is used to
indicate the type of ply construction in the tire.
The letter R means radial ply construction;
the letter D means diagonal or bias ply
construction; and the letter B means belted-bias
ply construction.
(E) Rim Diameter
:Diameter of the wheel in
inches.
(F) Service Description
:The service description
indicates the load range and speed rating of a
tire. The load index can range from 1 to 279.
Speed ratings range from A to Z.
Tire Terminology and De nitions
Air Pressure:The amount of air inside the
tire pressing outward on each square inch of the
tire. Air pressure is expressed in pounds per
square inch (psi) or kilopascal (kPa).
Accessory Weight
:This means the combined
weight of optional accessories. Some examples of
optional accessories are, automatic transmission,
power steering, power brakes, power windows,
power seats, and air conditioning.Aspect Ratio
:The relationship of a tire’s height
to its width.
Belt
:A rubber coated layer of cords that is
located between the plies and the tread. Cords
may be made from steel or other reinforcing
materials.
Bead
:The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
Bias Ply Tire
:A pneumatic tire in which the plies
are laid at alternate angles less than 90 degrees
to the centerline of the tread.
Cold Tire Pressure
:The amount of air pressure
in a tire, measured in pounds per square inch
(psi) or kilopascals (kPa) before a tire has built up
heat from driving. SeeInflation - Tire Pressure
on page 5-64.
Curb Weight
:The weight of a motor vehicle with
standard and optional equipment including the
maximum capacity of fuel, oil, and coolant,
but without passengers and cargo.
5-61
Mirrors (cont.)
Outside Heated Mirrors................................2-35
Outside Manual Mirror..................................2-33
Outside Power Mirrors..................................2-34
MP3 .............................................................3-81
MyGMLink.com................................................ 7-4
N
Navigation System, Privacy..............................7-18
New Vehicle Break-In......................................2-20
Noise Control System, Tampering......................5-48
O
Odometer......................................................3-27
Odometer, Trip...............................................3-27
Off-Road Recovery..........................................4-10
Oil
Engine.......................................................5-15
Pressure Gage............................................3-41
Pressure Light.............................................3-42
Oil, Engine Oil Life System..............................5-18
Older Children, Restraints................................1-29
Online Owner Center........................................ 7-4
OnStar, Privacy..............................................7-18
Other Warning Devices...................................... 3-6Outlet Adjustment............................................3-22
Outlets
Accessory Power.........................................3-18
Outside
Camper-Type Mirrors....................................2-33
Convex Mirror.............................................2-34
Heated Mirrors............................................2-35
Manual Mirror.............................................2-33
Power Mirrors.............................................2-34
Owner Checks and Services.............................. 6-9
Owners, Canadian............................................... ii
P
Paint, Damage..............................................5-106
Park Brake....................................................2-28
Park (P)
Shifting Into................................................2-29
Shifting Out of............................................2-30
Parking
Over Things That Burn.................................2-31
Passenger Airbag Status Indicator.....................3-31
Passenger Sensing System..............................1-69
Passing.........................................................4-10
PASS-Key
®III+..............................................2-18
PASS-Key®III+ Operation................................2-18
Perchlorate Materials Requirements, California...... 5-4
8
