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:
Odometer
This meter displays the odometer when the ignition switch is in the “ON” position.
The odometer shows the total distance that the vehicle has been driven.
If you press the trip knob when the igni ...
SAFETY
Although the STi wasn't designed as a family car, all of the family-centric
safety features on the Impreza sedan are in it. The STi has four-wheel-disc
antilock brakes with brake assist, stability ...
Odometer
Odometer
The odometer shows the total distance that the vehicle has been driven. ...
