TM-9-2610-200-14
CARE, MAINTENANCE, REPAIR, AND INSPECTION OF PNEUMATIC TIRES AND INNER TUBES
TECHNICAL MANUAL; OPERATOR'S, UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT; MAINTENANCE MANUAL
SEPTEMBER 2000
TM-9-2610-200-14 - Page 38 of 207
TM 9-2610-200-14
1-25
SECTION II.
EQUIPMENT DESCRIPTION AND DATA (Con't)
1-9.
TIRE MARKINGS AND CODES (Con't).
e. DOT CODES AND DATE OF MANUFACTURE FOR NEW AND
RETREADED TIRES.
Manufacturers and retreaders
are required
to imprint a DOT (Department of Transportation) code for
new highway type tires, or a Retread Code for highway type retreads
, on one sidewall of all tires
sold or used in the United States.
Off Highway tires
(e.g. Construction, Industrial and Agricultural)
do
not
require DOT or Retread codes. The DOT or Retread code consists of a combination of letters and
numerals, which identify the manufacturer/retreader plant, tire size, optional manufacturing or retreading
symbols and date of manufacture or retread. For tires manufactured before July 2, 2000 the date of
manufacturer or retread is indicated in the last group of three digits of the DOT or Retread code and
consist of the numerical week and the last digit of the year.
In the first example below: a date code of
042 means the tire was manufactured or retreaded in the 4
th
week of 1992 (or 1982, 1972 etc.).
Newer
tires will have a four digit date code which includes the decade.
In the second example below a date code
of 0402 means the tire was manufactured/retreaded in the 4
th
week of 2032.
The third example shows a
newer retread code and the date code indicates that the tire was retreaded in the 8
th
week of 2006.
DEPT. OF
TIRE SIZE
DATE OF
TRANSPORTATION
CODE
MANUFACTURE
MANUF.
GROUP OF
PLANT CODE
OPTIONAL CODES
EXAMPLE OF DOT CODE OF NEW TIRES MANUFACTURED BEFORE July 2, 2000
RETREAD
GROUP OF
PLANT CODE
OPTIONAL CODES
EXAMPLE OF RETREAD DOT CODE FOR RETREAD TIRES
TIRE SIZE OR CURRING
DATE OF
RETREAD
MATRIX CODE
RETREAD
DATE OF MANUFACTURE
WITH DECADE
EXAMPLE OF DOT CODE WITH 4 DIGIT DATE CODE FOR NEWER TIRES
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