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:
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 ...
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 ...
Voice command system
Talk switch
To turn on the voice command system, press the talk switch
briefly. To turn off the voice command
system, press the talk switch for more
than 1.5 seconds.
The commands available ...
