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:
Unfastening the seatbelt
Unfastening the seatbelt
Push the button on the buckle.
Before closing the door, make sure that
the belts are retracted properly to avoid
catching the belt webbing in the door. ...
Compass calibration
1. If a “C” is displayed in the compass window, the compass needs to be calibrated.
2. Drive the vehicle in a circle at 5 mph (8 km/h) or less until the display reads a direction.
3. You can also ca ...
Determining compatibility of tire and vehicle load capacities
The sum of four tires’ maximum load ratings must exceed the maximum loaded vehicle
weight (“GVWR”). In addition, sum of the maximum load ratings of two front tires
and of two rear tires must excee ...
