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:

    Safety warnings
    You will find a number of WARNINGs, CAUTIONs and NOTEs in this manual. These safety warnings alert you to potential hazards that could result in injury to you or others. Please read these safety ...

    Adverse safety consequences of under-inflation
    Driving at high speeds with excessively low tire pressures can cause the tires to flex severely and to rapidly become hot. A sharp increase in temperature could cause tread separation, and failure ...

    Selection of manual mode
    With the vehicle either moving or stationary, move the select lever from the “D” position to the manual gate then move it to the “+” end or “−” end of the manual gate to select manua ...