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:
Side ventilators
Side ventilators
1) Open
2) Close
3) Thumb-wheel
Move the tab to adjust the flow direction.
To open or close the ventilator, turn the
thumb-wheel up or down. ...
Examples of the types of accidents in which the driver’s/driver’s and front
passenger’s SRS frontal airbag(s) will basically not deploy.
The driver’s and front passenger’s SRS
frontal airbags are designed basically not
to deploy if the vehicle is struck from the
side or from behind, or if it rolls onto its
side or roof, or if ...
Recommended grade and viscosity
Each oil manufacturer has its own base oils and additives. Never use different
brands together. For details, refer to “Manual transmission, front differential
and rear differential gear oil” F12-6 ...
