Buick Verano Owner Manual (GMNA- Localizing-U.S./Canada-10122753) -
2017 - crc - 5/16/16
Vehicle Care 263
Tire Designations
Tire Size
The following is an example of a
typical passenger vehicle
tire size.
(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.
Buick Verano Owner Manual (GMNA- Localizing-U.S./Canada-10122753) -
2017 - crc - 5/16/16
Vehicle Care 277
Wheel Replacement
Replace any wheel that is bent,
cracked, or badly rusted or
corroded. If wheel nuts keep coming
loose, the wheel, wheel bolts, and
wheel nuts should be replaced.
If the wheel leaks air, replace it.
Some aluminum wheels can be
repaired. See your dealer if any of
these conditions exist.
Your dealer will know the kind of
wheel that is needed.
Each new wheel should have the
same load-carrying capacity,
diameter, width, offset, and be
mounted the same way as the one it
replaces.
Replace wheels, wheel bolts, wheel
nuts, or Tire Pressure Monitor
System (TPMS) sensors with new
GM original equipment parts.
{Warning
Using the wrong replacement
wheels, wheel bolts, or wheel
nuts can be dangerous. It could(Continued)
Warning (Continued)
affect the braking and handling of
the vehicle. Tires can lose air,
and cause loss of control, causing
a crash. Always use the correct
wheel, wheel bolts, and wheel
nuts for replacement.
Caution
The wrong wheel can also cause
problems with bearing life, brake
cooling, speedometer or
odometer calibration, headlamp
aim, bumper height, vehicle
ground clearance, and tire or tire
chain clearance to the body and
chassis.
Used Replacement Wheels
{Warning
Replacing a wheel with a used
one is dangerous. How it has
been used or how far it has been
driven may be unknown. It could
fail suddenly and cause a crash.
When replacing wheels, use a
new GM original equipment
wheel.
Tire Chains
{Warning
Do not use tire chains. There is
not enough clearance. Tire chains
used on a vehicle without the
proper amount of clearance can
cause damage to the brakes,
suspension, or other vehicle
parts. The area damaged by the
tire chains could cause loss of
control and a crash.(Continued)
Buick Verano Owner Manual (GMNA- Localizing-U.S./Canada-10122753) -
2017 - crc - 5/16/16
290 Vehicle Care
3. Place a 1.2 m (4 ft) X 102 mm(4 in) X 102 mm (4 in) wood
beam (4) under the front cradle
crossmember (3), and on top of
both tow chains (5) to ensure
the tow chains do not come
into contact with the front
fascia (1).
Try to minimize the contact of
the chains with the flexible
air dam (2).4. Ramps (2) are required for thefront fascia (3) to clear the
flatbed (1). The ramp height
should be approximately
102 mm (4 in). Lower the
flatbed onto the set of ramps.
Caution
If ramps are not used, the front
fascia will come into contact with
the flatbed and may cause
damage. Always use ramps. 5. After the front tires are on the
flatbed adjust the flatbed
upward to provide additional
clearance between the air dam,
fascia, and flatbed.
6. When the fascia has enough clearance to clear the flatbed,
lower the flatbed, and finish
pulling the vehicle onto the
flatbed.
7. Secure the vehicle to theflatbed (2) using nonabrasive
straps (1) through all four
wheel openings and secure the
straps to the flatbed (2).
