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Michelin: Tires last longer with 3D-printed tread
A novel 3D printing technique is set to give Michelin tires a longer life. According to the manufacturer, the tires can be worn down to the legal minimum tread depth of 1.6 millimeters without losing braking performance. This is said to be the decisive advantage over lower quality tires, which according to Michelin, lose braking effectiveness even before reaching the minimum tread depth. As a result, many drivers would replace their tires sooner.
This has an impact on the wallet. The tire manufacturer calculates that European consumers could save a total of 6.9 billion euros per year if they drove their tires down to the legal minimum tread depth.
"Performance is not a question of tread depth," says Theres Gosztonyi, head of the car tire division at Michelin Europe North.
"Premium Michelin tires brake reliably even with a tread depth of 1.6 millimeters."
This is made possible by a special printing technique from Michelin that allows for particularly delicate structures in the tire tread, making the tire more durable. If all drivers were to switch to such tires, it would have a significant effect: Michelin has calculated that 6.6 million tons of CO2 could be saved annually if all cars in Europe were equipped with Michelin tires. However, because consumers often resort to inferior tires, up to one million tons of raw materials would have to be extracted and processed annually—just for Europe.
In addition, the tires not only need to be manufactured, but also disposed of later. Furthermore, approximately 5,700 hectares of forest, equivalent to about 5,800 football fields, would need to be cleared to meet the demand for additional raw materials and energy if all drivers in Europe changed their summer tires when they still have three millimeters of tread remaining.
The extraction of these raw materials, the production of the additional tires, and the higher rolling resistance of new tires – compared to used ones – would eventually lead to additional emissions of up to 6.6 million tons of CO2.
“By 2050, our goal is to maintain tire production within a circular economy. We are already emphasizing this today through sustainable cultivation of natural rubber and our partnership with Enviro to recycle old tires into reusable raw materials for the production of new tires,” reports Theres Gosztonyi.
In addition to the increased costs of more frequent tire purchases, there are also up to 800 million euros annually due to higher fuel consumption resulting from the higher rolling resistance of new tires compared to the same tire with less tread remaining. Gosztonyi:
“Those who save on tires end up paying more in the long run. Purchase prices and higher fuel consumption of new tires can result in hidden costs of up to 40 percent per year.”
In 3D printing technology, the complicated shapes for treads are created using the laser layer process, enabling the high performance of Michelin tires. These “printed” shapes allow for much more intricate tread structures than, for example, milled or cast shapes. This enables the self-renewing tread of the Michelin tires.
Translated automatically from German.
Branchenguide
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