Different Size Tires and Wheels; Uniform Tire Quality Grading; Temperature A- Page 378

2010 Buick Lucerne Owner Manual

Model Year
2014 Dodge Charger SRT Owner Manual

Table of Contents

In Brief
Seats and Restraint System
Features and Controls
Instrument Panel
Service and Appearance Care
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Different Size Tires and Wheels

If you add wheels or tires that are a different size than
your original equipment wheels and tires, this may
affect the way your vehicle performs, including its
braking, ride and handling characteristics, stability, and
resistance to rollover. Additionally, if your vehicle has
electronic systems such as, antilock brakes, traction
control, and electronic stability control, the performance
of these systems can be affected.

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WARNING:

If you add different sized wheels, your vehicle
may not provide an acceptable level of
performance and safety if tires not recommended
for those wheels are selected. You may increase
the chance that you will crash and suffer serious
injury. Only use GM specific wheel and tire
systems developed for your vehicle, and have
them properly installed by a GM certified
technician.

See

Buying New Tires on page 6

74

and

Accessories

and Modifications on page 6

3

for additional

information.

Uniform Tire Quality Grading

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

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. 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-type
snow tires, space-saver, or temporary use 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.

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