49 CFR § 585.51 - Scope.

---
identifier: "/us/cfr/t49/s585.51"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 585.51 - Scope."
title_number: 49
title_name: "Transportation"
section_number: "585.51"
section_name: "Scope."
chapter_name: "NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
part_number: "585"
part_name: "PHASE-IN REPORTING REQUIREMENTS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 322, 30111, 30115, 30117, and 30166; delegation of authority at 49 CFR 1.95."
regulatory_source: "69 FR 70916, Dec. 8, 2004, unless otherwise noted."
cfr_part: "585"
---


# 585.51 Scope.

This subpart establishes requirements for manufacturers of new pneumatic tires for motor vehicles with a GVWR of 4,536 kg (10,000 lb) or less to respond to NHTSA inquiries, to submit reports, and to maintain records related to the reports, concerning the number of such tires that meet the requirements of Standard No. 139, *New pneumatic tires for light vehicles* (49 CFR 571.139).