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:
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Certain vehicle components such as airbag modules, seatbelt pretensioners and
keyless entry transmitter batteries may contain perchlorate material. Special handling
may apply for service or vehicl ...
Non-turbo models
The non-turbo engine is designed to operate using unleaded gasoline with an octane
rating of 87 AKI or higher. ...
