P Metric
With the P-Metric system, Section Width is measured in millimeters.
To convert millimeters into inches, divide by 25.4. The Aspect Ratio (Section Height divided by Section Width) helps provide more dimensional information about the tire size.
Example:

(1) P = Certain tire type used on light duty vehicles such as passenger cars
(2) Section Width in millimeters
(3) Aspect Ratio (= section height 7 section width).
(4) R = Radial Construction
(5) Rim diameter in inches
See also:
Changing a flat tire
WARNING
● Do not jack up the vehicle on an incline or a loose road surface. The jack
can come out of the jacking point or sink into the ground and this can result in
a serious accident.
...
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 t ...
Voice command system
Talk switch
To turn on the voice command system, press the talk switch
briefly. To turn off the voice command
system, press the talk switch for more
than 1.5 seconds.
The commands available ...
