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:
Infants or small children
Use a child restraint system that is suitable for your vehicle. Refer to “Child
restraint systems” F1-25. ...
3.6 L models
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2) Differential gear oil level gauge (page 11-26)
3) Automatic transmission fluid level gauge (page 11-24)
4) Brake fluid reservoir (page 11-28)
5) ...
RUNNING GEAR
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