Interpretation ID: nht71-1.17

DATE: 09/20/71

FROM: AUTHOR UNAVAILABLE; Lawrence R. Schneider; NHTSA

TO: Phillips Petroleum Company

TITLE: FMVSS INTERPRETATION

TEXT: This is in reply to a request made on behalf of Phillips Petroleum Company by Veigh J. Nielson for an assigned identification mark for two of Phillips' plants which manufacture tires for research purposes.

As I informed you in my letter of September 20, 1971, if Phillips purchases a new tire, removes the trend material and then applies its own experimental trend containing various rubber compounds, Phillips is considered to be a new tire manufacturer. If Phillips applies its experimental tread to a used tire, it is considered a retreader of tires.

As a new tire manufacturer you are required to certify the tire as conforming to the new passenger car tire standard (No. 109) and comply with Part 574 - Tire Identification and Record Keeping (49 CFR 574). Accordingly, you are assigned the identification mark of "J1" for tires made in your (Illegible Word), Oklahoma plant and "K1" for tires manufactured in your Stow, Ohio plant.

If you act as a retreader then Part 574 would not be applicable for the tires you retread because they are retreaded for your own use. (Enclosed is a copy of Docket No. 70-12, Notice No. 8 which makes the regulation inapplicable to retreaders who retread for their own use). As explained in my letter of September 20, you are, of course, required to certify that your new tires and your retreaded tires comply with the respective standards for new and retreaded tires if they are to be used on the public highways, by placing the symbol DOT on the tires in the prescribed location.