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:
Headlight
CAUTION
Halogen headlight bulbs become very hot while in use. If you touch the bulb surface
with bare hands or greasy gloves, fingerprints or grease on the bulb surface will
develop into hot spot ...
Changing the coolant
WARNING
Never attempt to remove the radiator cap until the engine has been shut off and
has cooled down completely. Since the coolant is under pressure, you may suffer
serious burns from a spray ...
Cruise control set indicator light
Refer to “Cruise control set indicator light”. ...
