Classification follows the vehicle type the tire is principally designed for, assessed by load index, ply rating, and rim diameter. Tires meeting passenger-car load and speed specifications go under 401110, while those built to commercial load ratings for buses or trucks go under 401120. When a tire is marketed for both uses, the primary design purpose and technical specifications control; a binding ruling from CBP can resolve borderline cases.

Yes. The US has issued antidumping and countervailing duty orders on passenger vehicle and light-truck tires from multiple countries. The specific orders, scope, and cash-deposit rates are maintained by the Department of Commerce and the International Trade Commission; importers should check the current order list and confirm the applicable rate for each origin before entry.