Interpretation ID: aiam2449
Truck Body and Equipment Association
5530 Wisconsin Ave.
Suite 1220
Washington
DC 20015;
Dear Mr. Crampton: This responds to the Truck Body and Equipment Association's November 8 1976, question whether any provision of Standard No. 120, *Tire Selection and Rims for Motor Vehicles Other than Passenger Cars*, prohibits the certification of a vehicle following the addition of an axle system (typically known as a 'tag' or 'pusher' axle) that is not equipped with tires or rims at the time of sale and delivery to the first purchaser for purposes other than resale.; The answer to your question is no. The requirement of S5.1.1 that '. . each vehicle equipped with pneumatic tires for highway service shall be equipped with tires that meet specified requirements . . . ' prohibits the installation of tires that do not meet certain performance requirements, but it is not a requirement that tires be fitted to every axle of a vehicle prior to certification and sale.; I would like to point out that S 567.4(g)(4) of Part 567 *Certification*, requires that a gross axle weight rating be assigned to each axle system. Section S5.1.2 of Standard No. 120 specifies that the GAWR be not more than the sum of the maximum load ratings of the tires fitted to the axle in question. While the agency interprets Standard No. 120 to permit the assignment of a GAWR on the basis of tires listed on the certification plate for that GAWR, the assignment of an arbitrarily high (or low) GAWR for purposes such as avoiding a Federal motor vehicle safety standard (such as Standard No. 121, *Air Brake Systems*), would constitute a violation of S108(a)(1)(D) of the National Traffic and Motor Vehicle Safety Act:; >>>S108(a)(1) No person shall (A) . . . (c) (sic) Fail to issue a certificate required by section 114 of thi title, or issue a certificate to the effect that a motor vehicle or item of motor vehicle equipment conforms to all applicable Federal motor vehicle safety standards, if such person in the exercise of due care has reason to know that such certification is false or misleading in a material respect.<<<; Sincerely, Frank A. Berndt, Acting Chief Counsel