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:
While climbing a grade
When driving up a hill, undesired upshift to 4th gear is prevented from taking place when the accelerator is released. This minimizes the chance of subsequent downshifting to a lower gear when acceler ...
Infants or small children
Use a child restraint system that is
suitable for your vehicle. Refer to “Child
restraint systems”. ...
Maintenance precautions
When maintenance and service are required, it is recommended that all work be done by an authorized SUBARU dealer.
If you perform maintenance and service by yourself, you should familiarize yourself ...
