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:
Construction type
Applicable construction of this tire.
For example, “TUBELESS STEEL BELTED RADIAL” ...
Shopping bag hook
Do not hang items on the shopping
bag hook that weigh 6 lbs (3 kg) or
more.
A shopping bag hook is attached to each
side of the cargo area. ...
D (Drive)
This position is for normal driving. The transmission automatically shifts into
a suitable gear according to the vehicle speed and the acceleration you require.
When more acceleration is required ...
