---
kind: "section"
citation: "49 C.F.R. § 570.63"
title: "49"
number: "570.63"
heading: "Wheel assemblies."
url: "https://uscodex.org/cfr/49/570.63"
---

# §570.63. Wheel assemblies.

- (a) **Wheel integrity.** A tire rim, wheel disc or spider shall have no visible cracks, elongated bolt holes, or indications of in-service repair by welding.
  - (1) **Inspection procedure.** Examine visually for the conditions indicated.
- (b) **Cast wheels.** Cast wheels shall not be cracked or show evidence of excessive wear in the clamp area.
  - (1) **Inspection procedure.** Examine visually for the conditions indicated.
- (c) **Mounting.** All wheel nuts shall be in place and tight.
  - (1) **Inspection procedure.** Check wheel retention for the conditions indicated.

## Notes

### Source

Source: 39 FR 26027, July 16, 1974, unless otherwise noted.

### Authority

Authority: Secs. 103, 108, 119, Pub. L. 89-563, 80 Stat. 718 (15 U.S.C. 1392, 1397, 1407); delegation of authority at 49 CFR 1.50.