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:
Drinking and driving
Drinking and then driving is very dangerous. Alcohol in the bloodstream delays your reaction time and impairs your perception, judgment and attentiveness. If you drive after drinking – even if you d ...
Precautions against vehicle modification
To avoid accidental activation of the
system or rendering the system
inoperative, which may result in
serious injury, no modifications
should be made to any components
or wiring of the S ...
Safety symbol
You will find a circle with a slash through it in this manual. This symbol means
“Do not”, “Do not do this”, or “Do not let this happen”, depending upon the context. ...
