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:
Outback
The use of a genuine SUBARU trailer hitch is recommended. A genuine SUBARU hitch
is available from your SUBARU dealer.
If use of a non-genuine hitch is unavoidable, be sure the hitch is suited to
...
If steam is coming from the engine compartment
Turn off the engine and get everyone away from the vehicle until it cools down. ...
Displaying radio PS (Program Service Name) and RT (Radio Text)
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