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:
Examples of the types of accidents in which the driver’s/driver’s and front
passenger’s SRS frontal airbag(s) will basically not deploy.
The driver’s and front passenger’s SRS frontal airbags are designed basically
not to deploy if the vehicle is struck from the side or from behind, or if it rolls
onto its side or roof, or if it ...
Recommended grade and viscosity
Each oil manufacturer has its own base oils and additives. Never use different brands together. For details, refer to “Manual transmission, front differential and rear differential gear oil”. ...
Display selection (type A, B and C audio)
Press the “TEXT” button while receiving
the satellite radio to change the display as
follows.
...
