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:
Battery
• Before beginning work on or near any battery, be sure to extinguish all cigarettes, matches, and lighters.
Never expose a battery to an open flame or electric sparks.
Batteries give off a gas ...
Tripped sensor identification
The security indicator light flashes when the alarm system has been triggered.
Also, the number of flashes indicates the location of unauthorized intrusion or
the severity of impact on the vehicle ...
