49 C.F.R. § 574.6
To obtain a plant code required by § 574.5(b)(1), each manufacturer of new or retreaded pneumatic tires, non-pneumatic tires, or non-pneumatic tire assemblies must apply in writing to the Office of Vehicle Safety Compliance, National Highway Traffic Safety Administration, 1200 New Jersey Ave. SW., Washington, DC 20590, identify itself as a tire manufacturer or retreader, and furnish the following information:
(e) The type of tires manufactured at each plant, e.g., pneumatic tires for passenger cars, buses, trucks, or motorcycles; pneumatic retreaded tires; or non-pneumatic tires or non-pneumatic tire assemblies.
Note to § 574,6: Additional requirements for new tire manufacturers may be applicable. See 49 CFR parts 551 and 566.
[80 FR 19560, Apr. 13, 2015]