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:
Display selection
Press the “TEXT” button while receiving the satellite radio to change the display
as follows:
...
Fuel
Use of a fuel which is low in quality or use of an inappropriate fuel additive may cause engine damage. ...
Security indicator light
This indicator light shows the status of the alarm system. It also indicates
operation of the immobilizer system. ...
