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:
Exterior
To the outside observer, little distinguishes the Impreza's various trim
levels. The base side mirrors are black-colored and fold, and the door handles
are body-colored. Fifteen-inch steel wheels ...
When the following messages are displayed
If one of the following messages is displayed while operating the CD player,
determine the cause based on the following information. If you cannot clear those
messages, please contact your SUBARU ...
Rear window wiper and washer switch
Rear window wiper and washer switch
Washer (accompanied by wiper
operation)
ON: Continuous
INT: Intermittent
OFF: Off
Washer ...
