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:
Headlights
Headlights
To turn on the headlights, turn the knob on
the end of the turn signal lever.
first position
Instrument panel illumination, tail lights,
front side marker lights and license ...
Low fuel warning light
The low fuel warning light illuminates when the tank is nearly empty approximately
2.6 US gal (10.0 liters, or 2.2 Imp gal). It only operates when the ignition switch
is in the “ON” position.
N ...
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. ...
