Canada estimates 29% dumping margin on Chinese truck tires

Ottawa, Canada – Canadian authorities have estimated a 29.1% dumping margin on truck and bus tires imported from China, as part of an investigation into the alleged unfairly priced imports.

The Canada Border Services Agency (CBSA) also estimated that the Chinese products received subsidies equivalent to 23.9% of their export price during the investigation period from April 2025 to March 2026.

The figures are preliminary estimates used to support the investigation and are not final duty rates, said CBSA in a 15 Sept announcement.

The probe covers new and retreaded radial and bias tires for trucks, buses, trailers and other medium and heavy vehicles, generally with rim diameters of 17.5, 19.5, 22.5 or 24.5 inches.

The investigation follows a petition from Michelin North America (Canada) and the Canadian Retread Manufacturers Association.

According to CBSA figures, China accounted for 44.6% of Canadian truck and bus tire imports in 2025, compared with 18.7% from the US and 36.7% from "other countries."

Its share increased further to 48.9% in the first quarter of 2026, while the US accounted for 15.9% and other countries 35.3%.

China had represented 51.3% of imports in 2022, before falling to 39.6% in 2024.

The investigation also highlighted falling prices for Chinese imports.

According to CBSA, average unit prices declined from C$181 (€112) in 2022 to C$174 in 2023, C$156 in 2024 and C$154 in 2025 – a 15% decline over the period.

By comparison, the cost of natural rubber in northeast Asia increased 23% between 2022 and 2025, while styrene-butadiene rubber prices increased 6%, according to figures cited by the CBSA.

The complainants said production and material costs had “increased significantly”, but low-priced Chinese imports prevented Canadian producers from raising prices sufficiently to offset the increases.

Between 2022 and 2025, the petitioners said, cost of goods manufactured and cost of goods sold increased, while selling prices rose by only a “marginal amount.”

The agency concluded that claims of “price undercutting and price suppression” were sufficiently supported and linked to the allegedly dumped and subsidised imports.

Canadian producers also reported declining sales and market share during the period.

According to the petition, imports of Chinese subject tires fell 2.5% between 2022 and 2025, while their share of the overall Canadian market increased from 28% to 31%.

CBSA, meanwhile, offered a more cautious analysis, saying China's market-share gains over the full 2022-25 period were “minimal.”

This, it said, diminished the causal link with losses suffered by domestic producers.

However, CBSA said the increase in Chinese import volumes between 2024 and 2025 was “drastic, and is cause for consideration”.

Overall, the CBSA said it found "the claims of price undercutting and price suppression to be well-supported and sufficiently linked to the allegedly dumped and subsidised goods."