Treadwear
The treadwear grade is a comparative rating based on
the wear rate of the tire when tested under controlled
conditions on a speci®ed government test course.
For example, a tire graded 150 would wear one and
a half (1.5) 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 signi®cantly 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 speci®ed 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.
Temperature ± A, B, C
The temperature grades are A (the highest), B, and C,
representing the tire's resistance to the generation
of heat and its ability to dissipate heat when tested
under controlled conditions on a speci®ed indoor
laboratory test wheel. Sustained high temperature can
cause the material of the tire to degenerate and
reduce tire life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds to a
level of performance which all passenger car tires must
meet under the Federal Motor Vehicle Safety Standard
No. 109. Grades B and A represent higher levels of
performance on the laboratory test wheel than the
minimum required by law.
Warning:The temperature grade for this tire is
established for a tire that is properly in¯ated and not
overloaded. Excessive speed, underin¯ation, or
excessive loading, either separately or in combination,
can cause heat buildup and possible tire failure.
5-65
2006 - Pontiac GTO Owner Manual
Child Restraints (cont.)
Securing a Child Restraint in the Right Front
Seat Position...........................................1-43
Where to Put the Restraint...........................1-36
Cigarette Lighter.............................................3-18
Cleaning
Aluminum Wheels........................................5-81
Exterior Lamps/Lenses.................................5-80
Fabric/Carpet..............................................5-78
Finish Care.................................................5-80
Inside of Your Vehicle..................................5-76
Instrument Panel, Vinyl, and Other Plastic
Surfaces.................................................5-79
Leather......................................................5-78
Tires..........................................................5-82
Underbody Maintenance...............................5-83
Washing Your Vehicle...................................5-80
Weatherstrips..............................................5-80
Windshield and Wiper Blades........................5-81
Climate Control System...................................3-19
Outlet Adjustment........................................3-21
Clutch, Hydraulic.............................................5-22
Collision Damage Repair..................................7-10Comfort Guides, Rear Safety Belt.....................1-22
Compact Spare Tire........................................5-76
Competitive Driving.........................................4-15
Content Theft-Deterrent....................................2-15
Control of a Vehicle.......................................... 4-6
Coolant
Engine Temperature Gage............................3-28
Cooling System..............................................5-29
Courtesy Lamps.............................................3-15
Cruise Control................................................3-10
Cupholder(s)..................................................2-30
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text
Telephone (TTY) Users............................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Reimbursement Program............... 7-5
Reporting Safety Defects to General Motors....7-14
Reporting Safety Defects to the
United States Government.........................7-13
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-14
3
2006 - Pontiac GTO Owner Manual
