Interpretation ID: nht76-1.38

DATE: 12/23/76

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Carlisle Tire & Rubber Company

TITLE: FMVSS INTERPRETATION

TEXT: This responds to Carlisle Tire and Rubber Company's May 7, 1976, request for assurance that certain of its tires are in Compliance with Standard No. 119, New Pneumatic Tires for Vehicles Other Than Passenger Cars, and your request for a meeting on the issue of reduced performance requirements for tires used on motor-driven cycles with a maximum speed capability of 30 mph or less. I regret that we have not responded sooner.

The National Traffic and Motor Vehicle Safety Act (the Act) (15 U.S.C. @ 1391, et seq.) does not permit the assurance of compliance with Standard No. 119 that you request. The Act requires "self-certification" by the manufacturer that each of its products actually complies with all applicable standards (15 U.S.C. @@ 1397(a)(1)(A), 1403). The NHTSA does not issue "approvals" for this reason.

With regard to your request for a meeting on the subject of performance standards for tires used on low-speed motor-driven cycles, I would like to advise you that the NHTSA has decided to reduce some of the performance requirements for these tires. If you believe that a meeting would be desirable before we have issued a specific proposal, please contact Mr. Elwood Driver at the above address (tel. (202) 426-1740) to meet on the technical aspects of this issue.

SINCERELY,

Carlisle Tire & Rubber

May 7, 1976

National Highway Safety Administration Frank Berndt Acting Chief Council, Legal Section

The Carlisle Tire & Rubber Company located in Carlisle, Pennsylvania is a manufacturer of bicycle and motorcycle type tires. Because of the recent interest in moped vehicles in the United States we have decided to add this type of tire to our line of products. Since this is a highway type tire we are attempting to comply with the requirements of the Department of Transportation. It has been indicated to us by various representatives of the Department of Transportation that this tire must be treated as a motorcycle tire even though the size of the motor of this vehicle would prevent these tires from ever exceeding a speed of 30 to 35 miles per hour. In attempting to comply with your current requirements we have subjected our tests to the following conditions.

1. The tire marking is in accordance with Motor Vehicle Safety Standard 119 and particularly Part 574. The DOT symbol is shown on the tire as well as our manufacturing code, tire size identification, and the date of manufacture. The tire size designation is shown. The maximum load rating and corresponding inflation pressure is also indicated on the tire. We identify our tire as a moped tire by printing the word "moped" on the sidewall of the tire. We have speed restricted tires by the words cured in the sidewall "Not to exceed 35 mph." We indicate the actual number of plies and the composition of the ply cord material. We also identify the tire as a tube type tire. The tire load is identified as "Load Range A."

2. We have three tread wear indicators that will provide visual determination that the tread has worn to a depth of 1/32nds of an inch.

3. The carcass strength has been tested to make sure that we are in accordance with Table 2 of the FMVSS-119 standard.

4. The tires have successfully passed the high speed performance test as listed in FMVSS-119. This, of course, requires testing the tire at 75, 80, and 85 miles per hour. Naturally we feel that these speeds are excessive for this limited horsepower vehicle.

5. The tire has been subjected to the endurance test as prescribed in FMVSS-119. Once again, we feel that these conditions are excessive since the vehicle is not capable of speeds of 50 mph.

We are maintaining a file of our tests performed on this tire. Although we are currently passing all of the motorcycle tests required by FMVSS-119 we feel that those requirements are excessive for this type of vehicle. We are capable of meeting those requirements by the use of more expensive materials and compounds than that required for this type of lightweight duty tire.

There are two purposes for writing this memorandum to your department.

1. We would like to have assurance from you that the tires that we are marketing are in compliance with the requirements of the Department of Transportation.

2. We are requesting a meeting with your department so that we may present proposed amendments to this safety standard that we feel would be more realistic for this type of tire.

We respectfully await your response to this subject.

J. L. Hollis Vice President/Engineering