Infiniti QX: Traction AA, A, B and 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.
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 wou ...
Temperature A, B and C
The temperature grades 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 ...
See also:
Windows
WARNING
Leaving children, helpless adults, or pets in a vehicle with the windows closed
is dangerous.
They can be overcome by the extreme heat and suffer permanent injuries or even
death from he ...
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Owner Checks and Services
At Each Fuel Stop
► Check the engine oil level.
See Engine Oil .
Once a Month
► Check the tire inflation pressures. See Tire Pressure .
► Inspect the tires for wear.
See Tire I ...