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:
Recommended grade and viscosity
Each oil manufacturer has its own base oils and additives. Never use different brands together. For details, refer to “Manual transmission, front differential and rear differential gear oil”. ...
XMTM satellite radio reception tips for antenna on the windshield (for U.S.A.
only — if equipped)
For some models, the satellite radio antenna is fixed to the upper right hand
corner of the windshield.
The XMTM satellite radio receiver that is fitted to your vehicle receives the
necessary s ...
Sirius satellite radio
Sirius satellite radio is a recent innovation that allows the listener to experience
digital sound quality and to have a greater variety of channels.
Use of satellite radio (Sirius) requires a tune ...
