From left: Toshihiro Uchiyama, General Manager, Sustainable Technology Strategy and Research Department, Bridgestone Corporation; Masashi Otsuki, Executive Director, Institute of Advanced Technology, Bridgestone Corporation; Prof Dr Tito Latif Indra, M.Si, Dean of the Faculty of Mathematics and Natural Sciences, Universitas Indonesia and Dr Retno Lestari, M.Si., Faculty of Mathematics and Natural Sciences, Universitas Indonesia.

Bridgestone has initiated a collaborative research project with Universitas Indonesia, Public University Corporation Yokohama City University (Yokohama City University), and Public University Corporation Maebashi Institute of Technology (Maebashi Institute of Technology) focused on the genetic analysis of para rubber trees. The partnership draws on tree samples and genetic data from Bridgestone’s own natural rubber farm in Indonesia, combined with the advanced capabilities of the academic institutions. The primary goal is to develop a marker assisted selection technique that can identify elite trees, characterised by high and stable yields, at an early stage. A formal signing ceremony took place at Universitas Indonesia on 7 April to mark the beginning of this joint effort.

Sustainability is central to Bridgestone’s management philosophy, reflected in its business model that links operations to carbon neutrality, a circular economy and nature positivity across the entire value chain from production to renewal. This research directly supports that vision by aiming to improve the sustainability of natural rubber. Ultimately, the company seeks to contribute to a more circular and regenerative business model where natural rubber production becomes increasingly efficient and environmentally responsible.

A stable supply of natural rubber is essential for tyre manufacturing and safe mobility, yet para rubber trees grow only in narrow equatorial bands and face threats from climate change and disease. With global vehicle ownership rising, demand for natural rubber is increasing, creating pressure to boost productivity without expanding farmland into forests. Bridgestone has therefore pursued multiple technological paths, including disease diagnostics and big data driven planting optimization on limited land. The company also supports smallholder farmers by sharing these technologies and providing training based on know‑how from its own farms, thereby enhancing productivity, improving livelihoods and strengthening the long-term sustainability of natural rubber.

In this specific research initiative, Bridgestone supplies latex samples and existing genetic information from its rubber trees. Universitas Indonesia handles the extraction of DNA and RNA data, while Yokohama City University and Maebashi Institute of Technology perform genetic analyses to pinpoint genes linked to rubber productivity. Together, they will build a marker assisted selection method for rapid, high-precision identification of elite trees, significantly shortening traditional breeding timelines that once took decades. After validating the technology and establishing propagation and nursery systems, Bridgestone plans to replace ordinary trees with elite varieties over the medium to long term, thereby raising productivity and stabilising yields within finite land resources.

Prof Dr Tito Latif Indra, M.Si, Dean of the Faculty of Mathematics and Natural Sciences, Universitas Indonesia, said, "In this project, the Faculty of Mathematics and Natural Sciences, Universitas Indonesia (FMIPA UI), will play a key role in supporting the scientific framework of the project by leveraging its expertise in molecular biology and genetic data acquisition. This collaboration is such an important foundation in strengthening FMIPA UI's academic contribution in impactful global research. Through research in the field of sustainable natural resources, we are trying our best to reinforce the ecosystem of global natural rubber production and provide significant innovation to support sustainable rubber plantations in Indonesia."

Yukihisa Shimada, Director, Kihara Institute for Biological Research, Public University Corporation Yokohama City University, said, "In this project, Yokohama City University will serve as a strategic and technical advisor, supporting collaboration with Indonesian government agencies and the establishment of research infrastructure. Through international collaboration, we will drive high-precision genome analysis and the selection of promising lines, contributing to the creation of scientific knowledge for sustainable resource use."

Kensuke Nakamura, President, Public University Corporation Maebashi Institute of Technology, said, "In this joint research, Maebashi Institute of Technology will lead the bioinformatics analysis, contributing to the advancement of natural resource research through a data-driven approach. As a public university, we are dedicated to fostering both locally grounded research and international research partnerships. By leveraging these strengths, we seek to generate impactful knowledge that will contribute to building a more sustainable society."

Masashi Otsuki, Executive Director, Institute of Advanced Technology, Bridgestone Corporation, said, "By co-creating with stakeholders across the natural rubber industry and promoting the sustainable use of natural rubber, Bridgestone strives to achieve the corporate commitment of ‘Ecology: Committed to advancing sustainable tire technologies and solutions that preserve the environment for future generations’ described in its Bridgestone E8 Commitment.

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Tyres Europe and the Association of Synthetic Amorphous Silica Producers (ASASP) have released a joint position paper on synthetic amorphous silica (SAS) in tyre manufacturing. The document highlights SAS as a critical component that improves wet grip, reduces rolling resistance and supports durability, thereby enhancing vehicle safety, fuel efficiency, electric vehicle range and lowering use-phase emissions.

A proposed harmonised classification for SAS is under consideration. Though not an outright ban, the industry warns it would likely compel manufacturers to phase out SAS during design rather than manage exposure, effectively bypassing practical risk controls.

Tyres Europe and ASASP urge regulators to base any action on robust evaluation of SAS properties, exposure conditions, established industrial uses and broader socio-economic impacts on European value chains. Policy measures must reflect these factors to avoid unintended disruptions.

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Tegeta Green Planet participated in the recent Social Design Days conference, a three-day event hosted by the Design Institute that centred on circular design and sustainable innovation. The gathering brought together diverse professionals to explore the intersection of creative disciplines and environmental responsibility.

During the proceedings, Tegeta Green Planet Director Shalva Akhvlediani engaged in a panel discussion that examined Georgia’s trajectory in building a circular economy. The conversation addressed the nation’s current obstacles and prospective avenues for growth, with a particular focus on systemic shifts in resource management and regulatory frameworks.

Akhvlediani pointed to measurable advancements in Georgia’s waste management infrastructure, the adoption of Extended Producer Responsibility standards and a growing national recycling ethos. These developments, he observed, are creating a robust base for more judicious resource utilisation and fostering habits of conscientious consumption. The panel further acknowledged that resourcefulness is deeply rooted in Georgian heritage, where mending, reusing and bequeathing goods were traditional practices, though modern consumerism has eroded these customs, necessitating a blend of age-old wisdom with contemporary circular strategies.

A critical takeaway from the discussion was the assertion that technological fixes and legislation alone are insufficient. Genuine progress, Akhvlediani argued, hinges on synergistic cooperation between designers, architects, researchers and creatives to engineer products and systems that prioritise longevity and recyclability from inception. Social Design Days proved instrumental in facilitating cross-sectoral dialogue, promoting circular principles and inspiring actionable solutions for national sustainability. Tegeta Green Planet reaffirmed its dedication to advancing these environmental objectives and supporting collaborative platforms that drive meaningful change.

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Continental is set to construct its first company-owned wind farm adjacent to its tyre production facility in Korbach, within the municipality of Twistetal, Hesse. The initiative will supply electricity directly to the plant, situated roughly eight kilometres away, thereby diversifying the manufacturer's energy portfolio. This strategic move aims to accelerate renewable power adoption, enhance cost competitiveness and diminish reliance on volatile energy markets.

The project features three turbines that, alongside existing solar systems, are projected to satisfy approximately two-thirds of the Korbach plant's electricity requirements. With an annual generating capacity of around 55 gigawatt-hours, the turbines could supply roughly 15,000 average households. Continental has allocated a mid-double-digit million-euro investment, having secured all necessary permits. Groundbreaking is anticipated in 2026, with commissioning expected about 18 months later.

Tyre production consumes significant power for operations like mixing raw rubber and extruding components. The Twistetal wind farm will enable the Korbach plant to meet a larger proportion of demand with locally sourced renewable energy fed directly into manufacturing. This addition complements existing infrastructure while maintaining reliable operations during fluctuating wind or solar conditions. The Korbach facility, employing approximately 2,400 people, produces tyres for passenger cars, motorcycles, bicycles and industrial uses.

Photovoltaic systems at Continental’s Korbach tyre plant.

The selected Nordex N175/6.X turbines have a hub height of 179 metres and a rotor diameter of 175 metres, reaching a total height of 267 metres, making them among the most powerful onshore turbines available.

The Korbach project represents a key step in Continental's broader strategy to expand proprietary energy generation, with similar initiatives considered globally. The goal is a flexible, economically viable energy supply while increasing renewable power proportion, ideally produced near each manufacturing site.

Continental is evaluating feasibility at worldwide plants, considering local conditions, regulations, storage, integration with existing sources and financial viability. Since 2020, the firm has covered global purchased electricity demand with renewables and reduced tyre production greenhouse gas emissions by approximately 180,000 metric tonnes over four years. By early 2026, coal and heavy fuel oil were eliminated at all production sites, replaced by electricity from renewables, biomass, biogas, LPG and natural gas for steam and heating.

Dr Bernhard Trilken, Head of Manufacturing & Logistics in Continental’s Tires group sector, said, “Having our own wind turbines near the plant will give us more predictable energy costs and reduce our exposure to volatile energy markets – key factors for competitive tyre production in Germany. This is fully aligned with our global strategy to expand our own renewable energy generation and will serve as a blueprint for other sites worldwide.”

Klaus Ohlwein, head of the Continental tyre plant in Korbach, said, “The wind farm will bring major benefits to our location. It will help us cover a significant share of our electricity needs in Korbach with our own renewable sources at competitive and more predictable costs. The electricity generated will be used directly in tyre production, including in mixers and extruders. The project is an important step in our sustainability activities at the site and demonstrates how industrial competitiveness and sustainable energy use can be effectively combined in Germany.”

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Pirelli is set to play a central role as the FIM Superbike World Championship concludes the first half of its season this weekend at Donington Park for the UK Round. Marking the final event before the summer break, the Italian tyre manufacturer has equipped competitors with the softest rear compounds from its 2026 standard range. This selection represents a clear advancement in development from the previous year, when riders were limited exclusively to older specification tyres.

For the premier WorldSBK class, the rear tyre allocation is headlined by the SCQ extrasoft compound, intended primarily for qualifying and the Superpole Race. This option, the softest in Pirelli’s portfolio, has already garnered positive feedback from riders during the Emilia-Romagna Round for its exceptional single-lap pace and consistent performance over a sprint distance. Complementing the SCQ are the SCX supersoft and SC0 soft compounds, while front tyre duties are covered by the standard SC1 soft and SC2 medium solutions, with the softer front being the overwhelming preference of last year’s grid, including triple race winner Toprak Razgatlıoğlu.

The notoriously unpredictable British weather remains a critical variable, with cool morning temperatures and frequent rain showers posing significant challenges for teams. Pirelli’s range has historically demonstrated considerable adaptability across fluctuating track and air temperatures, maintaining reliable grip in both cooler and warmer conditions. To address potential precipitation, the allocation is supplemented by DIABLO Wet intermediate and full DIABLO Rain tyres for both front and rear positions, ensuring competitors have viable options regardless of the elements.

In the supporting categories, WorldSSP riders will retain the SCX and SC0 rear compounds alongside the SC1 and SC2 front options. Meanwhile, the WorldWCR field and the emerging talents of the Yamaha R3 World Cup will also be in action, with both series utilising the Pirelli DIABLO Superbike SC1 tyre on both axles throughout the weekend’s racing programme.

Giorgio Barbier, Pirelli Motorcycle Racing Director, said, “Donington Park is a very distinctive circuit and, in many respects, a unique venue on the FIM Superbike World Championship calendar. The opening part of the lap features a series of fast, flowing corners taken at high speed and rapid changes of direction that require riders to manage significant power while the bike is still heavily leaned over. This demands tyres capable of delivering outstanding grip, precision and stability while maintaining consistent performance over race distance.

"Compared with last year, when only standard range solutions were available and no development specifications were included, this season, while confirming the same compounds introduced in 2025, we will provide riders with the complete 2026 standard range. The SCQ extrasoft compound will be the softest option in the allocation and can be used not only in free practice and qualifying but also, potentially, in the Superpole Race. For the longer races, riders will be able to rely on the SCX supersoft and, should temperatures be lower, the SC0 soft compound – solutions that have already demonstrated throughout the season an excellent balance between outright performance and consistency, as reflected by the many new records that have been set.

"Finally, the weather, which has historically been unpredictable in the UK, will once again be a key factor. Rain and low temperatures, even in the middle of summer, can have a major influence on tyre management and race strategies. Having a complete and versatile range available will therefore be essential to provide the best possible support in any weather conditions.”

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