Tire Pressure; Vehicle Care; Radial Ply Tire- Page 243

Buick Encore Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-

11354409) - 2018 - crc - 11/8/17

242

Vehicle Care

Radial Ply Tire

:

A pneumatic

tire in which the ply cords that
extend to the beads are laid at
90 degrees to the centerline of
the tread.

Rim

:

A metal support for a tire

and upon which the tire beads
are seated.

Sidewall

:

The portion of a tire

between the tread and the bead.

Speed Rating

:

An

alphanumeric code assigned to
a tire indicating the maximum
speed at which a tire can
operate.

Traction

:

The friction between

the tire and the road surface.
The amount of grip provided.

Tread

:

The portion of a tire that

comes into contact with
the road.

Treadwear Indicators

:

Narrow

bands, sometimes called wear
bars, that show across the tread
of a tire when only 1.6 mm

(1/16 in) of tread remains. See

When It Is Time for New Tires

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249

.

UTQGS (Uniform Tire Quality
Grading Standards)

:

A tire

information system that provides
consumers with ratings for a
tire's traction, temperature, and
treadwear. Ratings are
determined by tire
manufacturers using
government testing procedures.
The ratings are molded into the
sidewall of the tire. See

Uniform

Tire Quality Grading

0

252

.

Vehicle Capacity Weight

:

The

number of designated seating
positions multiplied by
68 kg (150 lb) plus the rated
cargo load. See

Vehicle Load

Limits

0

162

.

Vehicle Maximum Load on the
Tire

:

Load on an individual tire

due to curb weight, accessory
weight, occupant weight, and
cargo weight.

Vehicle Placard

:

A label

permanently attached to a
vehicle showing the vehicle
capacity weight and the original
equipment tire size and
recommended inflation pressure.
See

“

Tire and Loading

Information Label

”

under

Vehicle

Load Limits

0

162

.

Tire Pressure

Tires need the correct amount of
air pressure to operate
effectively.

Caution

Neither tire underinflation nor
overinflation is good.
Underinflated tires, or tires
that do not have enough air,
can result in:

.

Tire overloading and
overheating which could
lead to a blowout.

(Continued)