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:
Mode selection
Turn the “TUNE/TRACK/CH” dial and
select the HD Radio ON mode (hybrid
mode) or OFF mode (analog mode). ...
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” F12-6 ...
Channel scan
If you press the “SCAN” button while the radio is in the category search mode,
the radio turns to the category SCAN mode. In the category SCAN mode, the radio
scans only channels in the selected ...
