US Customs and Border Protection generally considers the retreading process a substantial transformation, meaning the country where retreading is performed is typically treated as the country of origin for duty purposes. However, the original casing origin may still be relevant for trade-remedy purposes if antidumping or countervailing duty orders are in effect. Importers should obtain a binding ruling or consult a licensed customs broker when sourcing from complex multi-country supply chains.

Retreaded tires sold or imported for use on US roads must comply with Federal Motor Vehicle Safety Standards administered by the National Highway Traffic Safety Administration (NHTSA), including proper DOT identification markings. Tires that do not meet these standards may be refused entry or require recall, so verifying compliance before shipment is essential.