(A) Passenger (P-Metric) Tire : The United States version of a metric tire sizing
system. The letter P as the first character in the tire size means a passenger
vehicle tire engineered to standards set by the U.S. Tire and Rim Association.

(B) Tire Width : The three-digit number indicates the tire section width in millimeters
from sidewall to sidewall.

(C) Aspect Ratio : A two-digit number that indicates the tire height-to-width
measurements. For example, if the tire size aspect ratio is 60, as shown in item C of
the illustration, it would mean that the tire's sidewall is 60 percent as high as it is
wide.

(D) Construction Code :  A letter code is used to indicate the type of ply
construction in the tire. The letter R means radial ply construction; the letter D
means diagonal or bias ply construction; and the letter B means belted-bias ply
construction.

(E) Rim Diameter : Diameter of the wheel in inches.

(F) Service Description : These characters represent the load index and speed
rating of the tire. The load index represents the load carry capacity a tire is certified
to carry. The speed rating is the maximum speed a tire is certified to carry a load.
Tire Size Example
P 235 / 60 / R16   97S
|        |            |        |    |            |
A      B          C      D  E          F
Warning lights Description