Buick Envista 2025 - Tire Pressure

Buick Envista Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-18181221) - 2025
Vehicle Care 221
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 3227.
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
m
anufacturers using government testing
procedures. The ratings are molded into
the sidewall of the tire. See Uniform Tire
Quality Grading 3229.
Vehicle Capacity Weight : The number of
designated seating positions multiplied
by 68 kg (150 lbs) plus the rated cargo load.
See Vehicle Load Limits 3141.
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's capacity weight and the original
equipment tire size and recommended
inflation pressure. See “Tire and Loading
Information Label” under Vehicle Load
Limits 3141.
Tire Pressure
Tires need the correct amount of air
pressure to operate effectively.
{ W
arning
Neither tire underinflation nor
o
verinflation 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 for internal
combustion engine vehicles
•
Reduced range for electric vehicles
Overinflated tires, or tires that have too
much air, can result in:
•
Unusual wear
•
Poor handling
•
Rough ride
•
Needless damage from road hazards