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:
Road surface freeze warning indication
Road surface freeze warning indication
1) U.S.-spec. models
2) Except U.S.-spec. models
When the outside temperature drops to
378F (38
C) or lower, the temperature
indication flashes to ...
Feature of distance marker
1) 3 feet (1 m) line
2) 6.5 feet (2 m) line
3) 10 feet (3 m) line
The distance marker shows the distance on the road. If there is a car or other
object close behind, distance cannot be correctl ...
