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.
Traction
–
AA, A, B, C
The traction grades, from highest to lowest,
are AA, A, B, and C. Those grades represent
the tire's ability to stop on wet pavement as
measured under controlled conditions on
specified government test surfaces of asphalt
and concrete. A tire marked C may have poor
traction performance. Warning: The traction grade
assigned to this tire is based on straight-ahead
braking traction tests, and does not include
acceleration, cornering, hydroplaning, or peak
traction characteristics.
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Summary of Contents for 2010 Cobalt
Page 6: ...2 NOTES vi ...
Page 8: ...Instrument Panel 1 2 ...
Page 30: ...2 NOTES 1 24 ...
Page 106: ...2 NOTES 2 76 ...
Page 272: ...2 NOTES 5 40 ...
Page 288: ...When you open the hood on the 2 0L L4 engine this is what you will see 6 16 ...
Page 366: ...A Cover B Retainer C Spare Tire D Wing Nut E Jack and Wheel Wrench F Bolt 6 94 ...
Page 420: ...Maintenance Record cont d Date Odometer Reading Serviced By Services Performed 7 16 ...
Page 421: ...Maintenance Record cont d Date Odometer Reading Serviced By Services Performed 7 17 ...
Page 422: ...Maintenance Record cont d Date Odometer Reading Serviced By Services Performed 7 18 ...