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

(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:

    Tire pressures
    Check and, if necessary, adjust the pressure of each tire (including the spare) at least once a month and before any long journey. Check the tire pressure when the tires are cold. Use a pressure gaug ...

    New vehicle break-in driving – the first 1,000 miles (1,600 km)
    The performance and long life of your vehicle are dependent on how you handle and care for your vehicle while it is new. Follow these instructions during the first 1,000 miles (1,600 km): ● ...

    Wiper and washer
    WARNING In freezing weather, do not use the windshield washer until the windshield is sufficiently warmed by the defroster. Otherwise the washer fluid can freeze on the windshield, blocking your v ...