4868-1. Specifications
DOT symbol*
Tire Identification Number
(TIN)
Tire manufacturer’s identifi-
cation mark
Manufacturer’s code
Manufacturing week
Manufacturing year
*: The DOT symbol certifies that the tire conforms to applicable Fed-
eral Motor Vehicle Safety Stan-
dards.
■Typical tire size information
The illustration indicates typical
tire size.
Tire use (P = Passenger car,
T = Temporary use)
Section width (millimeters)
Aspect ratio (tire height to
section width)
Tire construction code (R =
Radial, D = Diagonal)
Wheel diameter (inches)
Load index (2 digits or 3 dig-
its) Speed symbol (alphabet with
one letter)
■Tire dimensions
Section width
Tire height
Wheel diameter
Bead
Sidewall
Shoulder
Tread
Belt
Inner liner
Reinforcing rubber
Carcass
Rim lines
Bead wires
Tire size
Tire section names
