Subaru Forester: 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.
The traction grade assigned to this tire is based on straightahead 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
...
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
...
See also:
Octane rating tips
Using unleaded gasoline with an octane
rating lower than recommended can cause
persistent, heavy “spark knock”. (Spark
knock is a metallic rapping noise.) If
severe, this can lead to engin ...
Hazard warning flasher switch
Use the hazard warning flasher switch when the vehicle has to be parked on the
road for any emergency. The hazard warning flashers can always be operated, regardless
of the position of the ignit ...
On-Board Vehicle Computers and Event Data Recorders
Your vehicle is equipped with on-board computer systems which monitor and control
several aspects of vehicle performance, including the following:
• Emission-related components and engine parame ...
