I snipped this from the
TITLE 49--TRANSPORTATION
CHAPTER V--NATIONAL HIGHWAY TRAFFIC
SAFETY ADMINISTRATION, DEPARTMENT
OF TRANSPORTATION
PART 571--FEDERAL MOTOR VEHICLE SAFETY STANDARDS--Table of Contents
Subpart B--Federal Motor Vehicle Safety Standards
Sec. 571.139 Standard No. 139; New pneumatic tires for light vehicles
........... S4. Tire and rim matching information.
S4.1. Each manufacturer of tires must ensure that a listing of the
rims that may be used with each tire that it produces is provided to the
public in accordance with S4.1.1 and S4.1.2.
S4.1.1 Each rim listing for a tire must include dimensional
specifications and a diagram of the rim and must be in one of the
following forms:
(a) Listed by manufacturer name or brand name in a document
furnished to dealers of the manufacturer's tires, to any person upon
request, and in duplicate to: Docket Section, National Highway Traffic
Safety Administration, 400 Seventh Street, SW., Washington, DC 20590; or
(b) Contained in publications, current at the date of manufacture of
the tire or any later date, of at least one of the following
organizations:
(1) The Tire and Rim Association.
(2) The European Tyre and Rim Technical Organization.
(3) Japan Automobile Tire Manufacturers' Association, Inc.
(4) Tyre & Rim Association of Australia.
(5) Associacao Latino Americana de Pneus e Aros (Brazil).
(6) South African Bureau of Standards.........
It basicly says the tire manufacturers have to approve any rim for it to be legally used with their tires. They will supply you with a copy of that list if you ask for one.
If their is any legal bead-locked rim, it will be on that list.