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:
Unlocking the phonebook
1. Select the “SETUP” menu.
2. Select the “SECURITY” menu.
3. Select the “PHBK UNLOCK” menu by operating the “TUNE/TRACK/CH” dial or say “PHONEBOOK UNLOCK”. Then “CURRENT PIN?” is displayed.
NOTE
...
Tone and balance control (type A, B and C audio)
Each brief press of the “TUNE/TRACK/
CH” dial changes the control modes in the
following sequence.
Choose the preferred level for each mode
by turning the “TUNE/TRACK/CH” dial.
The control ...
Replacing the air cleaner element
Replace the air cleaner element according to the maintenance schedule in the
“Warranty and Maintenance Booklet”. Under extremely dusty conditions, replace it
more frequently. It is recommended tha ...
