Requirements for wheels
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
(a) Spokes. There shall be no missing spokes.
(b) Alignment. The wheel assembly shall be aligned such that no less than 1.6 mm ( 1/16 in.) clearance exists between the tire and fork or any frame member when the wheel is rotated to any position.
(c) Rims. Rims shall retain the spokes and tire when side-loaded with 2000 N (450 lbf) and tested in accordance with the rim test, § 1512.18(j). Sidewalk bicycles need not meet this requirement.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.