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['CMV Parts and Maintenance']
['Tires']
04/07/2025
Persons requesting the addition of new tire sizes not included in S4.4.1(b) organizations may, upon approval, submit five (5) copies of information and data supporting the request to the Vehicle Dynamics Division, Office of Crash Avoidance Standards, National Highway Traffic Safety Administration, West Building, 1200 New Jersey Ave. SE., Washington, DC 20590.
The information should contain the following:
1. The tire size designation, and a statement either that the tire is an addition to a category of tires listed in the tables or that it is in a new category for which a table has not been developed.
2. The tire dimensions, including aspect ratio, size factor, section width, overall width, and test rim size.
3. The load-inflation schedule of the tire.
4. A statement as to whether the tire size designation and load inflation schedule has been coordinated with the Tire and Rim Association, the European Tyre and Rim Technical Organization, the Japan Automobile Tyre Manufacturers Association, Inc., the Tyre and Rim Association of Australia, the Associacao Latino Americana de Pneus e Aros (Brazil), or the South African Bureau of Standards.
5. Copies of test data sheets showing test conditions, results and conclusions obtained for individual tests specified in §571.109.
6. Justification for the additional tire sizes.
['CMV Parts and Maintenance']
['Tires']
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