Triangle increases the strength of mining tires
In early 2026, the Triangle plant in Huashan, China, shipped a batch of super-large tires made using the new EnsureX Efficiency Technology, which increases tire strength by enhancing the adhesion between polymers and metal cord. The tires were sent through the port of Qingdao to a coal mine in Vietnam's Quang Ninh province.
The company notes that in the hot and humid climate of Southeast Asia, problems can arise during the operation of quarry tires, including high wear and short service life. In Quang Ninh province, open-pit coal mines are mainly used, with extremely complex working conditions, and temperatures can reach 40 degrees, the rainy season lasts six months, and humidity exceeds 80%, resulting in increased tire aging and delamination, and an abnormally high percentage of failed tires, which can be up to 20%.
To address this issue, the Triangle development team spent three years creating a new technology for the giant tire segment, and the manufacturer claims that the new-generation tires have reduced the number of delamination cases by more than 95% and increased their service life by more than 15%.
Tire strength is increased due to the use of new additives without cobalt content and a modified metal coating application system using gradient layer distribution technology. Triangle says that thanks to the new formula and multi-layer coating structure, its fatigue strength has been increased, which is crucial for frequent tire deformations under high loads. Additionally, the resistance to aging has been increased, resulting in a more than 40% increase in adhesion efficiency and ensuring the structural integrity of the tire throughout its life cycle. The third advantage is long-term corrosion protection, which is three times more effective compared to standard technologies. For this reason, the tires are optimally suited for harsh operating conditions, including tropical and coastal areas, and the new development improves both tire life and safety, as well as tire retreadability.
Tires with a diameter of 49 and 57 inches, made using the new technology, have already been tested in quarries, and Triangle claims that a "mechanical anchor" is created, reliably fixing the metal cord and providing a tighter connection between the tire's "skeleton" and "muscles", and adhesion efficiency "exceeds industry standards".
"The successful implementation of the new development is another breakthrough in the giant tire segment, which will further strengthen Triangle's leading position in the market and give impetus to the development of high-quality Chinese tires in this category," the company concludes.