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:
Current fuel consumption
1) U.S.-spec. models
2) Except U.S.-spec. models
This indication shows the rate of fuel consumption at the present moment. ...
Vehicle Dynamics Control OFF switch
Pressing the switch to deactivate the Vehicle Dynamics Control system can facilitate
the following operations.
● a standing start on a steeply sloping road with a snowy, gravel-covered, or ...
Treadwear
The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course.
For example, a tire graded 150 would wear ...
