Interpretation ID: nht79-4.20

DATE: 10/15/79

FROM: AUTHOR UNAVAILABLE; Stephen P. Wood; NHTSA

TO: Federal Trade Commission/PC

TITLE: FMVSR INTERPRETATION

TEXT: This is in response to your letter of September 11, 1979, asking whether the National Highway Traffic Safety Administration (NHTSA) has adopted the Rubber Manufacturers Association (RMA) definition of mud and snow tire or has made any official statement regarding the validity of that definition. NHTSA has not adopted the RMA definition for use in any agency regulations, relating either to safety standards or to tire quality grading, nor has NHTSA made any official statement regarding the validity of the definition. If I can be of further assistance, do not hesitate to contact me.

Sincerely,

ATTACH.

FEDERAL TRADE COMMISSION/PC

SEPTEMBER 11, 1979

Dick Hipolit, Esquire -- Office of Chief Counsel, National Highway Traffic Safety Agency

Dear Mr. Hipolit:

Pursuant to our conversation of September 11, 1979, I would appreciate if you would inform me whether N.H.T.S.A. has adopted the industry standard of the Rubber Manufacturers Association's definition of a mud and snow tire or has offered any opinions regarding its validity.

The definition states that: "The characteristics of a mud and snow tire are:

(a) A substantial portion of the lug, block, or rib edges in the tread design are at an angle greater than 30 degrees to the tire circumferential center line.

(b) On at least one side of the tread design, the shoulder lugs protrude at least 1/2" in a direction generally perpendicular to the direction of travel."

The above information may be sent to Jeff Jacobovitz, Federal Trade Commission/PC, 6th & Pennsylvania Avenue, N.W., Washington, D.C. 20580.

Thank you.

Sincerely, Jeff Jacobovitz -- Legal Intern, Division of Compliance