8-36 Do-it-yourself
4. Three-digit code: Tire type code
(Optional)
5. Four numbers represent the
week and year the tire was built.
For example, the numbers 3103
means the 31st week of 2003. If
these numbers are missing, then
look on the other sidewall of the
tire.
WAI0339X
Example (Type B) (if so equipped)
TIN (Tire Identification
Number) for a new tire
(example: DOT XXX XXXXXX
XXXX)
1. DOT: Abbreviation for the “De-
partment of Transportation”.
The symbol can be placed
above, below or to the left or
right of the Tire Identification
Number.
2. Three-digit code: Manufacturer’s
identification mark
3. Six-digit code: Descriptive code
used to identify significant char-
acteristics of the tire.
4. Four numbers represent the
week and year the tire was built.
For example, the numbers 3103
means the 31st week of 2003.
Tire ply composition and materi-
al
The number of layers or plies of
rubber-coated fabric in the tire.
Tire manufacturers also must in-
dicate the materials in the tire,
which include steel, nylon, polye-
ster, and others.
Maximum permissible inflation
pressure
This number is the greatest
amount of air pressure that should
be put in the tire. Do not exceed the
maximum permissible inflation
pressure.
Maximum load rating
This number indicates the maxi-
mum load in kilograms and pounds
that can be carried by the tire.