Different Size Tires And Wheels; Wheel Covers; Uniform Tire Quality Grading - Chevrolet Spark 2021 Owner's Manual

Vehicles that have a tire pressure
monitoring system could give an
inaccurate low-pressure warning if
non-TPC Spec rated tires are installed.
See Tire Pressure Monitor System 0 196.
The Tire and Loading Information Label
indicates the original equipment tires
on the vehicle. See Vehicle Load Limits
0 131.

Different Size Tires and Wheels

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.
Warning
If different sized wheels are used, there
may not be an acceptable level of
performance and safety if tires not
Warning (Continued)
recommended for those wheels are
selected. This increases the chance of a
crash and serious injury. Only use GM
specific wheel and tire systems developed
for the vehicle, and have them properly
installed by a GM certified technician.
See Buying New Tires 0 202 and
Accessories and Modifications 0 162.

Wheel Covers

Installation
Tighten the wheel nut caps by hand while
pressing on the center of the wheel cover
with the other hand. Then tighten an
additional one-quarter turn with the wheel
wrench.

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
(Continued)
Vehicle Care
States. The 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.
203