Interpretation ID: 1984-3.8

TYPE: INTERPRETATION-NHTSA

DATE: 08/17/84

FROM: AUTHOR UNAVAILABLE; Frank Berndt; NHTSA

TO: Burt McMillian

TITLE: FMVSS INTERPRETATION

TEXT: This responds to your recent letter to Mr. Steve Kratzke of my staff, asking for information about rebuilt steel wheels for use on motor vehicles other than passenger cars. For the purposes of this response, I will respond only for the rim portion of the wheel, since both the regulations you inquired about apply only to rims, and not the entire wheel assembly. Specifically, you asked about the applicability of a regulation issued by the Occupational Safety and Health Administration (OSHA) and this agency's Standard No. 120, Tire selection and rims for motor vehicles other than passenger cars (49 CFR @ 571.120). This agency does not offer opinions on the applicability of other Federal agency regulations, and Standard No. 120 does not apply to rebuilt rims.

You stated in your letter that one of OSHA's regulations states that "no cracked, broken, bent or otherwise damaged rim components shall be reworked, welded, brazed, or otherwise heated", and that OSHA interprets the center disc as a rim component subject to the requirements of that regulation. You further stated that a staff member in our Office of Defect Investigations offered his opinion that the OSHA regulation did not apply to the center disc. This agency does not interpret the regulations administered by other Federal agencies, unless and until such time as that regulation appears inconsistent with our statutory authority. There is no apparent conflict between the OSHA regulation and our authority, so we defer to their interpretation of that regulation.

You further stated in your letter that "the only other regulation concerning rebuilding wheels is NHTSA Standard No. 120 concerning identification of rebuilt wheels." We have stated in several past interpretations that Standard No. 120 does not apply to remanufactured or rebuilt rims. Section S5.2 of Standard No. 120 does set forth rim marking requirements, but these apply only to new rims. Section 108(b)(1) of the National Traffic and Motor Vehicle Safety Act (hereafter referred to as "the Safety Act") (15 U.S.C. 1397(b)(1)) specifies that the requirements of our safety standards shall not apply after the first purchase of a rim in good faith for purposes other than resale. Since the components of rebuilt rims have already been used on the public roads, the requirements of Standard No. 120 do not apply to the rebuilding of those rims.

You concluded your letter with the observation that these rims are subject to significantly more stress today than they were ten years ago, and that repaired or rebuilt rims should be "looked at". There is a course of action you might wish to pursue if you believe this perceived problem presents a serious threat. You may file a petition for rulemaking with this agency, asking us to establish some strength requirements for new rims. Section 108(a)(2)(A) of the Safety Act specifies that no manufacturer, distributor, dealer, or motor vehicle repair business shall "knowingly render inoperative any . . . element of design installed on or in . . . an item of motor vehicle equipment in compliance with an applicable Federal motor vehicle safety standard, . . . " If Standard No.

120 were amended to include some strength requirements for new rims, those persons could violate section 108(a)(2)(A) of the Safety Act if they knowingly weaken the rims. For your information I have enclosed a copy of our regulation which sets forth the requirements for petitions for rulemaking (49 CFR Part 552). Should you choose to file such a petition, please pay particular attention to the requirements of @ 552.4, which explains the information which must be included in the petition.

I thank you for bringing this matter to our attention, and believe that the safety concerns of people like yourself who are daily involved with tires and rims are an invaluable help to this agency. Please do not hesitate to contact me if you have any further questions or concerns.

ENCLS.

LES SCHWAB WAREHOUSE CENTER INC.

June 26, 1984

Steve Kratzke Chief Consul National Highway Traffic Safety Administration

Dear Mr. Kratzke:

During a recent telephone conversation with Gary Woodford of NHTSA, he suggested I write to you and get your opinion on rebuilding truck wheels.

There seems to be a great deal of confusion over several regulations regarding rebuilding of steel truck wheels. OSHA regulation 1910.77 (F) 9. states "no cracked, broken, bent or otherwise damaged rim components shall be reworked, welded, brazed or otherwise heated". It is OSHA's opinion that the center disc is a rim component, therefore, cannot be welded. Mr. Woodford's opinion was that OSHA's jurisdiction only concerns lock rings or parts involved in mounting safety.

The only other regulation concerning rebuilding wheels is NHTSA standard120 concerning identification of rebuilt wheels. As I understand this regulation all that is required is some sort of stamp such as date, initials or trademark that is not registered or otherwise traceable.

My concern is that there are people welding and/or rebuilding wheels that have no concept of the engineering or design of steel wheels. As an example; recently I ran across a rebuilder who was cutting out the mounting surface of the disc and welding in a new one. When he bored the stud holes he was putting a chamfered or beveled seat instead of a ball seat. It is highly probable that unless excess amount of torque were applied to the cap nuts this wheel would come loose. The problem is that any tire service store that changes that wheel in the future then becomes liable if the wheel comes loose. The difference between a chamfered or beveled seat and a ball seat is so minute that most service people would never notice the difference.

With the advent of the radial tire, greater allowable weight limits and deregulation, wheels are subjected to a lot more stress than they were ten years ago. Therefore, wheels today must be of much better quality and it would seem that repairing of wheels or rebuilding them should be looked at.

I would appreciate you sending me any information or opinions on this subject that would help clear up this muddy situation.

Thank you.

Burt McMillan