By Sharad Matade

As part of its sustainability efforts, Continental aims at using at least ten percent of natural rubber derived from Russian dandelion roots in its tyre and industrial rubber goods production in future.

“We have undertaken a huge research task to meet ten percent of our requirement of natural rubber from dandelion roots. It is a long-term process,” Dr Carla Recker, Head of Expertfield Materials Chemistry & Taraxagum, told Tyre Trends in an interview. “It will take decades to complement natural rubber from Hevea brasiliensis with natural rubber from dandelion plants at an industrialised level. However, the company does not intend to replace NR from Hevea brasiliensis trees.”

According to Dr Carsten Venz, Site Manager at Taraxagum Lab Anklam, “Dandelion will be an additional source of natural rubber, not a replacement to rubber trees, in the coming years.”

Continental has been consequent on the cultivation and processing of Russian dandelion as an alternative source of raw material to the rubber tree in the tropics. Last year, the company officially opened its research and test laboratory named Taraxagum Lab Anklam in Anklam, Germany, a base for its future research into the cultivation and processing of Russian dandelion, within a year after the ground-breaking ceremony held in November 2017.

“The Taraxagum Lab Anklam is the latest key milestone of our project,” said Dr Recker.

The Taraxagum project is crucial for the company. “The natural rubber from dandelion is important to develop a new alternative and sustainable supply of the raw material” Dr Venz said.

On bicycle tyres

Though the lab was opened last year, Continental started working on the dandelion rubber project in 2011, and the company has already used rubber from dandelion roots in its passenger car tyres, truck tyres and industrial rubber goods. “The latest development on production-side is that we have industrialised bicycle tyres with rubber derived from dandelions. So, you can now buy bicycle tyres of Continental made of dandelion rubber in the market,” Dr Recker said. Continental showcased its first bicycle tyre with dandelion rubber at the Tour de France this year.

Currently, the Taraxagum lab is working on dandelion research, and over the next five to ten years, it will focus on the industrialisation of dandelion rubber and increase the share for the dandelion rubber in its products.

“Continental sees the Russian dandelion as one element of our commitment for sustainable natural rubber as detailed in our Sustainable Natural Rubber Sourcing Policy published in October 2018. At least for us, the Russian dandelion is the most promising alternative source for natural rubber. There might be different sources (to get natural rubber), but that does not fit for us. The Russian dandelion can be grown in different climate zones unlike natural rubber from heave brasiliensis trees which need tropical climates to grow. Rubber trees and the Russian dandelion have the same characteristics, the same chemical structure and the same properties. It is just two plants producing the same material,” says Dr Recker. The advantage of dandelion rubber over rubber from trees is that the former has a generation succession of just three months as compared to seven years for the latter.

Since the dandelion plants can be cultivated in Northern and Western Europe, which makes transportation routes to the European production sites much shorter and contributes to the sustainable use of existing resources, thinks Continental.

However, the major challenge will be the 100 percent replacement of rubber made from trees with dandelion rubber. Dr Recker thinks, yes, technically, dandelion can replace tree rubber by 100 percent, but the more significant challenge will be the industrialisation of dandelion rubber to the level of rubber trees. “We are at a research stage. The amount of dandelion available globally is not enough to replace natural rubber commercially. To create that biological system to industrialise the natural rubber from the dandelion will take some time and we will have to be more patient,” says Dr Recker.

Research is a time and capital consuming task. Synthetic rubber is also coming into tyre production in a more significant way, but the crude oil derived commodity has historically been volatile, and even oil-producing nations are diversifying their businesses citing falling productions and growing focus on cleaner options.

Dandelion rubber is not new to the tyre industry; however, the industry does not seem much keen on dandelion plants as an alternative source for natural rubber. “Not everybody (tyre company) is willing to invest in the early research of dandelion rubber and setting up the entire bio-economy. You have to establish a full value chain from breeding to the production of natural rubber from dandelion plants, which is does not exist yet and not every market player is willing to invest in such a long-term process,” explains Dr Recker.

Since Continental sees dandelion a sustaining resource for natural rubber in the future, it has made a substantial investment for the project. It has already poured in 35 million euros for the project. “Though many of our peers are investing in other resources to get natural rubber, I think we are quite unique investing like the way we are to explore alternative resources for natural rubber,” says Dr Venz.

Over 90 percent of natural rubber derives from South East Asia, a tropical region suitable for natural rubber trees. However, erratic climate behaviour is hitting production of natural rubber in this region. Natural rubber producers are also exploring other areas to grow natural rubber trees. According to Dr Recker, the research project has yet to ascertain the survival scope of the Russian dandelion in changing climates. “I believe that Dandelion will grow in all climate zones,” says Dr Recker.

Yield ratio

As of now, Continental also does not have comparable yield ratios between natural rubber from dandelion and hevea brasiliensis. “We are working on determining the output of natural rubber per acre from both resources,” says Dr Venz. “Usually, between 1 and 1.8 ton per hectare per year is produced from rubber trees, and around the same amount of production per hectare we are expecting from dandelion plants,” estimates Dr Recker.

As part of the value chain creation, the company is focusing on breeding for seed production and harvesting, root production and harvesting, and the extraction process. According to the company, growers also need some time to understand and get hands-on to harvest dandelion plants. Every year climate conditions will determine a different impact on the plants. “We will need to see how the crops will react in different climate and harvesting seasons. We are building a network of farmers in North East Germany from whom we learn and whom we can teach what we have learned,” added Dr Recker.

Fundamental design and development of tires for the mobility of the future will be unchanged; however, tires will be expected to be high performance and eco-friendly. According to Continental executives, for the mobility of the future, natural rubber will remain the core ingredient and dandelion will be one of the sustainable options to provide natural rubber. “Rubber be will be used in future to make high-performance tires, and we are exploring the option to have a sustainable source for natural rubber,” adds Dr Recker.

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Bridgestone has introduced a new addition to its Potenza ultra-high-performance line: the RE-71RZ extreme summer tyre. Designed specifically for grassroots racing, this tyre succeeds the acclaimed RE-71RS model. It aims to deliver quicker lap times and sharp, responsive handling, empowering drivers to maximise their performance on the circuit. A cornerstone of its design is the incorporation of ENLITEN technology, Bridgestone's next-generation platform focused on enhancing durability and advancing sustainable product design.

The tyre's development directly targets key performance metrics. On-track testing at Japan's Tsukuba Circuit demonstrated significant improvements, with the RE-71RZ achieving lap times approximately three-quarters of a second faster than its predecessor in both dry and wet conditions. This gain is attributed to several advanced engineering features. A new high-grip rubber compound, developed using insights from motorsports and proprietary NanoPro-Tech, enhances traction at a molecular level. The tread pattern has been redesigned with a stiffer construction and a larger outside shoulder to improve grip and stability, while a strategically placed main groove on the inside edge helps suppress uneven wear for longer track life. Furthermore, Bridgestone utilised its unique ULTIMAT EYE digital modelling tool to optimise the tyre's structure, creating a more uniform contact area for superior cornering grip.

Professional drivers Masahiro Sasaki and Yuji Tachikawa provided critical feedback during development, their expertise helping to refine the tyre's track-focused characteristics. The Potenza RE-71RZ builds upon a legacy that began in 1979, crafted for enthusiasts who demand competition-ready performance that transitions from daily driving to weekend motorsports. It has been approved for competition use by the Sports Car Club of America (SCCA) and will be eligible for Solo and Time Trials events starting in 2026. The tyre will be offered in 45 sizes and is scheduled to launch in the North American market on 31 December 2025.

Sasaki said, “As its strong point, the Potenza RE-71RZ achieves a high level of performance in both grip and controllability. It delivers improved dry and wet performance for street use while also achieving faster lap times and better wear resistance on the track. This tyre delivers high performance in various situations, making it enjoyable and easy to handle for both everyday driving and track use.”

Tachikawa said, “This tyre is designed for easy handling, allowing anyone to experience precise control along with excellent grip. The tyre is focused on quick warm-up for immediate, high-grip performance as well as reliable wet grip, resulting in a well-balanced tyre suitable for various driving conditions.”

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Prometeon Tyre Manufacturing is in discussions with Egypt’s Ministry of Investment and Foreign Trade over a planned US$400 million expansion, as the company moves to scale up production and strengthen its position in one of its key regional hubs.

A senior delegation from parent company China National Tire & Rubber Company met Minister Hassan Al-Khatib in Cairo to outline Prometeon’s growth plans for its Amreya factory in Alexandria. The group included chairman Wang Jian Jun, vice president Sun Deng, Prometeon Egypt chairman Omar Mehna, deputy general manager Yuan Liang, Africa–Middle East CEO Stefano Ziliani and CFO Hisham Abdel-Hadi.

During the meeting, Al-Khatib commended the pace of Prometeon’s development efforts, saying the ministry “will spare no effort to meet the company's requirements, in the context of preparing a conducive climate for investment and to protect the competition”. He also said Prometeon would receive continued backing through the China Unit at the General Authority for Investment and Free Zones to ensure the company has “all the necessary information and required data”.

Prometeon executives told the minister that the planned investment aims to increase its investments by $400 million, which is in production of 1 1 one million additional car tires and upskill the existing factory efficiency.

 Prometeon’s Alexandria complex currently produces about 5.2 million tyres annually, and the expansion would introduce new manufacturing technologies to raise output and improve capability.

As part of its proposal, the company is seeking an additional 200,000 square metres of land adjacent to its current site to support the enlarged facility. Prometeon is also exploring the establishment of a dedicated free zone to serve its export-focused operations.

For Prometeon, the investment aligns with its strategy to reinforce Egypt as a central platform for supplying markets across Africa, the Middle East and Europe. The company views the country’s manufacturing base and export access as key strengths as global demand patterns shift.

The talks signal the company’s intention to deepen its long-term commitment in Egypt, subject to final approvals and land allocation.

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Yokohama Rubber Co. has opened a new passenger-car tyre plant in Hangzhou, completing the project one month ahead of schedule and marking the first major milestone under its fast-build manufacturing strategy in China.

The company held an opening ceremony recently, attended by local government officials and community representatives. Yokohama Rubber was represented by President and COO Shinji Seimiya, who praised the speed of construction and stressed the plant’s role in the group’s long-term ambitions.

In his remarks, Seimiya said he was grateful for the support that allowed the project to finish ahead of plan. He also noted that the new plant is a very important project for Yokohama Rubber's sustainable growth in the future and that every effort will be made to quickly achieve mass production and deliver high-quality, high-value-added products to the Chinese market as soon as possible.

The Hangzhou facility is the first plant built under the company’s “1-year plant” challenge, a core initiative in its medium-term strategy, Yokohama Transformation 2026. The programme aims to speed up factory construction while lowering production costs and improving efficiency. Work on the new plant began in December 2024, with operations now starting in November 2025.

The project also fulfils a request from the Hangzhou government to relocate an older plant as part of the city’s environmental plans. The new factory will have an annual capacity of 9 million tyres—about 3 million more than the site it replaces—positioning Yokohama to meet rising demand for passenger-car tyres in China. Full-scale production is expected by the second quarter of 2026.

The expansion strengthens the company’s supply of high-value tyres for China’s fast-growing new energy vehicle market, including EV-focused designs and larger rim sizes.

Alongside the rapid-build initiative, Yokohama is pushing to raise the share of premium products in its consumer tyre business by expanding sales of its ADVAN and GEOLANDAR brands, winter tyres, and 18-inch and larger tyres. The company is also rolling out regional product strategies to tailor development and sales to market-specific trends.

The opening of the Hangzhou plant underscores how Yokohama Rubber is trying to sharpen its competitive position in Asia’s largest tyre market while keeping pace with shifts in vehicle technology and local regulations.

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HS HYOSUNG ADVANCED MATERIALS has been honoured as a Community Contribution Certified Company for the seventh consecutive year. The recognition was conferred at the 2025 Community Contribution Recognition Day event in Seoul, where the company also received a Minister of Health and Welfare’s Commendation and the highest possible ‘S’ grade. This dual accolade underscores the sustained public value and consistent performance of its social responsibility programmes.

The certification itself is a rigorous evaluation administered by the Ministry of Health and Welfare and the Korea National Council on Social Welfare. It involves a comprehensive review based on ESG Principles, spanning multiple evaluation areas and numerous detailed indicators. In the latest assessment, the company excelled particularly in environmental management, earning recognition for its robust sustainability and carbon-neutral practices. Its diverse community initiatives, which are developed through long-term regional partnerships and extensive employee volunteerism, were also highly commended for building a stable and effective collaborative framework with local communities.

This ongoing commitment has been strategically reinforced following the establishment of the HS Hyosung Group in 2024. Under the new slogan ‘Value, Together’, the company has redefined its approach to social contribution. Its efforts are now organised around three core pillars: providing support for vulnerable groups, fostering the advancement of local communities and culture and promoting eco-friendly initiatives.

H S CHO, Vice Chairman, HS HYOSUNG, said, “Receiving the Minister of Health and Welfare’s Commendation and the highest ‘S’ grade is the result of our longstanding commitment to putting ‘Value, Together’ into action within our communities. We will continue to carry out diverse social contribution initiatives as a responsible company that grows together with local communities.”

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