CHAPTER 2. CARE, MAINTENANCE, AND INSPECTION (Con't)
SECTION V. GENERAL SUPPORT MAINTENANCE (Con't)
2-45. INSPECTION OF REPAIRED OR RETREADED TIRES.
All incoming shipments of retreaded and repaired tires must be examined to verify satisfactory
workmanship and to ensure that only dependable, safe retreaded tires are accepted and used. The
following instructions provide standard criteria for acceptance inspection of retreaded or repaired tires.
Any of the defects listed below are cause for rejection of tires.
(1) Retread identification markings missing or not legible (not applicable to Group 4, Off Road,
Low Speed Tires, Industrial Tires and Agricultural Tires).
Each tire will be permanently marked with the contractor/vendor's identification
mark, the week and year of retread, and a number or name indicating the type of
retreading performed. The DOT Code identification and the date of manufacture
shall conform to the requirements of Section 574.5 of the Department of
Transportation Tire Identification and Record Keeping procedures. When the type of
retreading is indicated by a number, the number shall be as specified in the table
Inspection Marking Codes. For example, a full bead-to-bead retread shall be marked
I-A, a top (shoulder to shoulder) retread 1-B, etc. The number or name shall also be
molded into the tread shoulder area of the tire as prescribed above. Marking symbols
shall not be less than 5/32 inch (4.0 mm) in height and not more than a 2 inch space
(2) Nail hole repairs (Type II-A) are exempt from the permanent marking. When tires are
retreaded in a plant other than the contractor's own facility, the subcontractor will comply with the
RETREAD TIRE SIZE OR CURRING
MATRIX CODE RETREAD
RETREAD GROUP OF
PLANT CODE OPTIONAL CODES
EXAMPLE OF RETREAD DOT CODE FOR RETREAD TIRES