2014 GMC TERRAIN wheel size

Black plate (30,1)GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-6081485) - 2014 - CRC - 12/6/13
3-30 Seats and Restraints
Warning (Continued)
proper service procedures, and
make sure the person performing
work for you is qualified to do so.
Adding Equipment to the
Airbag-Equipped Vehicle
Adding accessories that change the
vehicle's frame, bumper system,
height, front end, or side sheet
metal, may keep the airbag system
from working properly. The
operation of the airbag system can
also be affected by changing or
moving any parts of the front seats,
safety belts, the airbag sensing and
diagnostic module, steering wheel,
instrument panel, roof-rail airbag
modules, ceiling headliner or pillar
garnish trim, overhead console,
front sensors, side impact sensors,
or airbag wiring.Your dealer and the service manual
have information about the location
of the airbag sensors, sensing and
diagnostic module, and airbag
wiring.
In addition, the vehicle has a
passenger sensing system for the
front outboard passenger position,
which includes sensors that are part
of the passenger seat. The
passenger sensing system may not
operate properly if the original seat
trim is replaced with non-GM
covers, upholstery, or trim; or with
GM covers, upholstery, or trim
designed for a different vehicle. Any
object, such as an aftermarket seat
heater or a comfort-enhancing pad
or device, installed under or on top
of the seat fabric, could also
interfere with the operation of the
passenger sensing system. This
could either prevent proper
deployment of the passenger
airbag(s) or prevent the passenger
sensing system from properlyturning off the passenger airbag(s).
See
Passenger Sensing System on
page 3-25.
If the vehicle has rollover roof-rail
airbags, see Different Size Tires
and Wheels on page 10-57 for
additional important information.
If you have to modify your vehicle
because you have a disability and
you have questions about whether
the modifications will affect the
vehicle's airbag system, or if you
have questions about whether the
airbag system will be affected if the
vehicle is modified for any other
reason, call Customer Assistance.
See Customer Assistance Offices
on page 13-3.
Airbag System Check
The airbag system does not need
regularly scheduled maintenance or
replacement. Make sure the airbag
readiness light is working. See
Airbag Readiness Light on
page 5-10.

Black plate (28,1)GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-6081485) - 2014 - CRC - 12/6/13
5-28 Instruments and Controls
LANE DEPARTURE SYSTEM
UNAVAILABLE
If your vehicle has the Lane
Departure Warning (LDW) system,
this message may display if the
LDW system cannot activate due to
a temporary condition. SeeLane
Departure Warning (LDW) on
page 9-46 for more information.
PARK ASSIST OFF
This message displays when the
park assist system has been turned
off or when there is a temporary
condition causing the system to be
disabled. See Ultrasonic Parking
Assist on page 9-40.
SERVICE SIDE DETECTION
SYSTEM
If this message appears, both SBZA
displays will remain on indicating
there is a problem with the SBZA
system. If these displays remain on
after continued driving, the system
needs service. Take the vehicle to
your dealer.
SERVICE FRONT CAMERA
This message displays when the
Lane Departure Warning (LDW) and
Forward Collision Alert (FCA)
systems are disabled and need
service. See your dealer.
SERVICE PARK ASSIST
This message displays if there is a
problem with the Ultrasonic Rear
Parking Assist (URPA) system. Do
not use this system to help you
park. See Ultrasonic Parking Assist
on page 9-40 for more information.
SIDE BLIND ZONE ALERT
SYSTEM OFF
This message indicates that the
driver has turned the system off.
SIDE BLIND ZONE SYS.
UNAVAILABLE
This message indicates that the
SBZA system is disabled because
the sensor is blocked and cannot
detect vehicles in the blind zone.
The sensor may be blocked by mud,
dirt, snow, ice, or slush. This message may also activate during
heavy rain or due to road spray. The
vehicle does not need service. For
cleaning, see
Side Blind Zone Alert
(SBZA) on page 9-41.
Ride Control System
Messages
ALL WHEEL DRIVE OFF
If your vehicle has the All-Wheel
Drive (AWD) system, this message
displays when there is a temporary
condition making the AWD system
unavailable. The vehicle will run in
two-wheel drive. This could be
caused by:
.A compact spare tire on the
vehicle.
.AWD system overheat.
.Loss of wheel or vehicle speed.
.Certain other vehicle electrical
conditions.
This message turns off when the
compact spare tire is replaced by a
full-size tire, the differential fluid

Black plate (30,1)GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-6081485) - 2014 - CRC - 12/6/13
9-30 Driving and Operating
Press the eco (economy) button
next to the shift lever to turn this
feature on or off. The eco light in the
instrument cluster will come on
when engaged. SeeFuel Economy
Light on page 5-19. A Driver
Information Center (DIC) message
is also displayed. See Fuel System
Messages on page 5-27.
When Fuel Economy Mode is on:
.The transmission will upshift
sooner and downshift later.
.The torque converter clutch will
apply sooner and stay on longer.
.The gas pedal will be less
sensitive.
.The vehicle's computer will more
aggressively shut off fuel to the
engine under deceleration.
.The engine idle speed will be
lower.
.Driving performance is more
conservative.
.The climate controls may take
longer to heat or cool the cabin.
.The rear defogger will stay on
for shorter periods of time.
Drive Systems
All-Wheel Drive
Vehicles with this feature transfer
engine power, as required, to all
four wheels. It is fully automatic, and
adjusts itself as needed for road
conditions.
When using a compact spare tire on
an AWD vehicle, the system
automatically detects the compact
spare and reduces AWD
performance to protect the system.
To restore full AWD operation and
prevent excessive wear on the
system, replace the compact spare
with a full-size tire as soon as
possible. See Compact Spare Tire
on page 10-68.

Black plate (2,1)GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-6081485) - 2014 - CRC - 12/6/13
10-2 Vehicle Care
When It Is Time for NewTires . . . . . . . . . . . . . . . . . . . . . . 10-54
Buying New Tires . . . . . . . . . . . 10-55
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . 10-57
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . 10-57
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . 10-59
Wheel Replacement . . . . . . . . 10-59
Tire Chains . . . . . . . . . . . . . . . . . 10-60
If a Tire Goes Flat . . . . . . . . . . 10-60
Tire Changing . . . . . . . . . . . . . . 10-62
Compact Spare Tire . . . . . . . . 10-68
Jump Starting
Jump Starting . . . . . . . . . . . . . . 10-69
Towing the Vehicle
Towing the Vehicle . . . . . . . . . 10-72
Recreational Vehicle Towing . . . . . . . . . . . . . . . . . . . . 10-72
Appearance Care
Exterior Care . . . . . . . . . . . . . . . 10-75
Interior Care . . . . . . . . . . . . . . . . 10-80
Floor Mats . . . . . . . . . . . . . . . . . . 10-83
General Information
For service and parts needs, visit
your dealer. You will receive
genuine GM parts and GM-trained
and supported service people.
Genuine GM parts have one of
these marks:
California Proposition
65 Warning
Most motor vehicles, including this
one, contain and/or emit chemicals
known to the State of California to cause cancer and birth defects or
other reproductive harm. Engine
exhaust, many parts and systems,
many fluids, and some component
wear by-products contain and/or
emit these chemicals.
California Perchlorate
Materials Requirements
Certain types of automotive
applications, such as airbag
initiators, safety belt pretensioners,
and lithium batteries contained in
Remote Keyless Entry transmitters,
may contain perchlorate materials.
Special handling may be necessary.
For additional information, see
www.dtsc.ca.gov/hazardouswaste/
perchlorate.
Accessories and
Modifications
Adding non‐dealer accessories or
making modifications to the vehicle
can affect vehicle performance and
safety, including such things as
airbags, braking, stability, ride and

Black plate (44,1)GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-6081485) - 2014 - CRC - 12/6/13
10-44 Vehicle Care
(1) Passenger (P-Metric)
Tire
:The United States version
of a metric tire sizing system.
The letter P as the first
character in the tire size means
a passenger vehicle tire
engineered to standards set by
the U.S. Tire and Rim
Association.
(2) Tire Width
:The three-digit
number indicates the tire section
width in millimeters from
sidewall to sidewall.
(3) Aspect Ratio
:A two-digit
number that indicates the tire
height-to-width measurements.
For example, if the tire size
aspect ratio is 60, as shown in
item 3 of the illustration, it would
mean that the tire's sidewall is
60 percent as high as it is wide.
(4) 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.
(5) Rim Diameter
:Diameter of
the wheel in inches.
(6) Service Description
:
These characters represent the
load index and speed rating of
the tire. The load index
represents the load carrying
capacity a tire is certified to
carry. The speed rating is the
maximum speed a tire is
certified to carry a load.
Tire Terminology and
Definitions
Air Pressure:The amount of
air inside the tire pressing
outward on each square inch
of the tire. Air pressure is
expressed in kPa (kilopascal)
or psi (pounds per square inch). Accessory Weight
:The
combined weight of optional
accessories. Some examples
of optional accessories are
automatic transmission, 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 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.

Black plate (53,1)GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-6081485) - 2014 - CRC - 12/6/13
Vehicle Care 10-53
Replace the tire if:
.The indicators at three or
more places around the tire
can be seen.
.There is cord or fabric
showing through the tire's
rubber.
.The tread or sidewall is
cracked, cut, or snagged
deep enough to show cord or
fabric.
.The tire has a bump, bulge,
or split.
.The tire has a puncture, cut,
or other damage that cannot
be repaired well because of
the size or location of the
damage.
Tire Rotation
Tires should be rotated every
12 000 km (7,500 mi). See
Maintenance Schedule on
page 11-2.
Tires are rotated to achieve a
uniform wear for all tires. The
first rotation is the most
important.
Anytime unusual wear is
noticed, rotate the tires as soon
as possible, check for proper tire
inflation pressure, and check for
damaged tires or wheels. If the
unusual wear continues after the
rotation, check the wheel
alignment. SeeWhen It Is Time
for New Tires on page 10-54
and Wheel Replacement on
page 10-59.
Use this rotation pattern when
rotating the tires.
Do not include the compact
spare tire in the tire rotation.
Adjust the front and rear tires to
the recommended inflation
pressure on the Tire and
Loading Information label after
the tires have been rotated. See
Tire Pressure on page 10-47
and Vehicle Load Limits on
page 9-14.

Black plate (56,1)GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-6081485) - 2014 - CRC - 12/6/13
10-56 Vehicle Care
Winter tires with the same speed
rating as the original equipment
tires may not be available for H,
V, W, Y and ZR speed rated
tires. Never exceed the winter
tires’maximum speed capability
when using winter tires with a
lower speed rating.
{Warning
Tires could explode during
improper service. Attempting
to mount or dismount a tire
could cause injury or death.
Only your dealer or authorized
tire service center should
mount or dismount the tires.
{Warning
Mixing tires of different sizes,
brands, or types may cause
loss of control of the vehicle,
resulting in a crash or other
vehicle damage. Use the
correct size, brand, and type
of tires on all wheels.
{Warning
Using bias-ply tires on the
vehicle may cause the wheel
rim flanges to develop cracks
after many miles of driving.
A tire and/or wheel could fail
suddenly and cause a crash.
Use only radial-ply tires with
the wheels on the vehicle. If the vehicle tires must be
replaced with a tire that does not
have a TPC Spec number, make
sure they are the same size,
load range, speed rating, and
construction (radial) as the
original tires.
Vehicles that have a tire
pressure monitoring system
could give an inaccurate
low-pressure warning if non-TPC
Spec rated tires are installed.
See
Tire Pressure Monitor
System on page 10-48.
The Tire and Loading
Information label indicates the
original equipment tires on the
vehicle. See Vehicle Load Limits
on page 9-14.

Black plate (57,1)GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-6081485) - 2014 - CRC - 12/6/13
Vehicle Care 10-57
Different Size Tires and
Wheels
If wheels or tires are installed that
are a different size than the original
equipment wheels and tires, vehicle
performance, including its braking,
ride and handling characteristics,
stability, and resistance to rollover
may be affected. If the vehicle has
electronic systems such as antilock
brakes, rollover airbags, traction
control, electronic stability control,
or All-Wheel Drive, the performance
of these systems can also be
affected.
{Warning
If different sized wheels are used,
there may not be an acceptable
level of performance and safety if
tires not recommended for those
wheels are selected. This
increases the chance of a crash
and serious injury. Only use GM(Continued)
Warning (Continued)
specific wheel and tire systems
developed for the vehicle, and
have them properly installed by a
GM certified technician.
See Buying New Tires on
page 10-55 andAccessories and
Modifications on page 10-2.
Uniform Tire Quality
Grading
Quality grades can be found
where applicable on the tire
sidewall between tread shoulder
and maximum section width. For
example:
Treadwear 200 Traction AA
Temperature A
The following information relates
to the system developed by the
United States National Highway
Traffic Safety Administration (NHTSA), which grades tires
by treadwear, traction, and
temperature performance. This
applies only to vehicles sold in
the United States. The grades
are molded on the sidewalls of
most passenger car tires. The
Uniform Tire Quality Grading
(UTQG) system does not apply
to deep tread, winter tires,
compact spare tires, tires with
nominal rim diameters of
10 to 12 inches (25 to 30 cm),
or to some limited-production
tires.
While the tires available on
General Motors passenger cars
and light trucks may vary with
respect to these grades, they
must also conform to federal
safety requirements and
additional General Motors Tire
Performance Criteria (TPC)
standards.