49 C.F.R. § 393.205 Wheels.
Title 49 - Transportation
(a) Wheels and rims shall not be cracked or broken. (b) Stud or bolt holes on the wheels shall shall not be elongated (out of round). (c) Nuts or bolts shall not be missing or loose.
Title 49: Transportation
PART 393—PARTS AND ACCESSORIES NECESSARY FOR SAFE OPERATION
Subpart J—Frames, Cab and Body Components, Wheels, Steering, and Suspension Systems
§ 393.205 Wheels.