Interpretation ID: aiam1465

Mr. Robert E. Langdon III, 2511 West 7th Street, Los Angeles, California 90057; Mr. Robert E. Langdon III
2511 West 7th Street
Los Angeles
California 90057;

Dear Mr. Langdon: This is in reply to your letter of April 12, 1974, asking whethe retreaded tires are required by Motor Vehicle Safety Standard No. 117 to have either a ribbed tread pattern or treadwear indicators.; Standard No. 117 does not have requirements for tread pattern design and thus retreaded tires need not have a ribbed tread design. Each retreaded tire must, however, in accordance with S5.1.1(b) of Standard No. 117, incorporate a treadwear indicator that will provide a visual indication that the tire has worn to a tread depth of 1/16 inch.; Yours truly, Richard B. Dyson, Assistant Chief Counsel