Tire Pressure; Vehicle Care; Speed Rating- Page 219

Buick Cascada Owner Manual (GMNA-Localizing-U.S.-12461774) - 2019 -

CRC - 3/26/18

218

Vehicle Care

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

0

225

.

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

227

.

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

142

.

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

142

.

Tire Pressure

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

{

Warning

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.

.

Premature or

irregular wear.

.

Poor handling.

.

Reduced fuel economy.

Overinflated tires, or tires that
have too much air, can
result in:

.

Unusual wear.

(Continued)