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:
STI
1) Power steering fluid reservoir
2) Clutch fluid reservoir
3) Brake fluid reservoir
4) Fuse box
5) Battery
6) Windshield washer tank
7) Engine oil filler cap
8) Engine coolant reservoir
9) ...
Cruise control set indicator light
This light illuminates when vehicle speed
has been set. ...
Deactivating the REV alarm system
To deactivate the REV indicator light and buzzer functions of the REValarm system, set the thousands place of the alarm-level engine speed to “–”. ...
