GMC Acadia 2025 - Different Size Tires and Wheels; Uniform Tire Quality Grading

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-18281917) - 2025
Vehicle Care 307
Winter tires with the same speed rating
a
s
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.
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.
The Tire and Loading Information label
indicates the original equipment tires on
the vehicle. See Vehicle Load Limits 3179.
Different Size Tires and Wheels
{ Warning
I
f different sized wheels are used, there may
n
ot 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 specific wheel and tire
(Continued)
Warning (Continued)
systems developed for the vehicle, and
have them properly installed by aGM
certified technician.
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.
See Buying New Tires 3 306 and Accessories and
Modifications 3266.
Uniform Tire Quality Grading
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.
Th
e 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.
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
All Passenger Car Tires Must Conform to
Federal Safety Requirements In Addition
To These Grades.