Vehicle Care
9-71
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.
All Passenger Car Tires Must
Conform to Federal Safety
Requirements In Addition To
These Grades.
Treadwear
The treadwear grade is a
comparative rating based on the
wear rate of the tire when tested
under controlled conditions on a
specified government test
course. For example, a tire
graded 150 would wear one and
a half (1½) times as well on the
government course as a tire
graded 100. The relative
performance of tires depends
upon the actual conditions of
their use, however, and may
depart significantly from the
norm due to variations in driving
habits, service practices and
differences in road
characteristics and climate.
Summary of Contents for 2010 SRX
Page 6: ...vi Introduction 2 NOTES...
Page 34: ...1 28 Keys Doors and Windows 2 NOTES...
Page 108: ...3 12 Storage 2 NOTES...
Page 111: ...Instruments and Controls 4 3 2 NOTES...
Page 112: ...4 4 Instruments and Controls Instrument Panel Overview...
Page 122: ...4 14 Instruments and Controls Instrument Cluster United States version shown Canada similar...
Page 238: ...6 72 Infotainment System 2 NOTES...
Page 304: ...8 60 Driving and Operating 2 NOTES...
Page 310: ...9 6 Vehicle Care Engine Compartment Overview 2 8 L V6 Engine...
Page 312: ...9 8 Vehicle Care 3 0 L V6 Engine...
Page 436: ...11 4 Technical Data Engine Drive Belt Routing 2 8L 3 0L V6 Engines...
Page 456: ...12 20 Customer Information 2 NOTES...