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:
Breaking-in of new brake pads and linings
When replacing the brake pad or lining,
use only genuine SUBARU parts. After
replacement, the new parts must be
broken in as follows. ...
Tachometer
The tachometer shows the engine speed in thousands of revolutions per minute.
CAUTION
Do not operate the engine with the pointer of the tachometer in the red zone.
In this range, fuel injection wi ...
Convex mirror (passenger side)
WARNING
Objects look smaller in a convex mirror and farther away than when viewed in
a flat mirror. Do not use the convex mirror to judge the distance of vehicles behind
you when changing lanes. ...
