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

(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:

    Speedometer
    The speedometer shows the vehicle speed. ...

    Safety
    Still think you can't have it all? Check out the Impreza's crash tests, which at the time of publication are the best in the Insurance Institute for Highway Safety's Small Car class, with top scor ...

    Windows
    WARNING To avoid serious personal injury caused by entrapment, always conform to the following instructions without exception. ● When operating the power windows, be extremely careful to pre ...