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:
SRS side airbag and SRS curtain airbag
The SRS side airbag is stored in the door side of each front seat seatback, which bears an “SRS AIRBAG” label.
In a moderate to severe side impact collision, the SRS side airbag on the impacted side ...
Replacement of wiper blades
Grease, wax, insects, or other material on the windshield or the wiper blade results in jerky wiper operation and streaking on the glass. If you cannot remove the streaks after operating the windshiel ...
Rocking the vehicle
If you must rock the vehicle to free it from
snow, sand, or mud, depress the accelerator
pedal slightly and move the shift
lever/select lever back and forth between
“1”/“D” and “R” repeatedly. ...
