In a candid interaction with Tyre Trends, freelance tyre testing specialist Juuli Raatikainen shares her views on the intricacies of tyre testing, the role of women in the industry, simulation and the road ahead, reports Nilesh Wadhwa.

“Women have been driving cars for decades, so why not be part of the tyre and automotive testing industry? I believe the bigger question and challenge is how the industry (tyre and automotive) can think beyond gender. The tyre testing industry is huge, but there are not many direct studies to learn about it and become part of it,” remarked Juuli Raatikainen, the 28-year-old test driver and mechanic who has been offering freelance services for tyre testing for the last four years.

INITIAL JOURNEY

It is no secret that tyre testing is not a widely known field. A simple internet search for the world’s top 10 racers or motorsport celebrities will return mostly male sports personalities.

For Raatikainen, the journey into tyre testing began as a test assistant in Lapland, Finland.

“I started my career as a test assistant. My passion for testing grew, and I was eager to learn more, working hard to gain knowledge. My efforts were noticed, and I received the necessary support. The decision to start my own company and operate as a freelancer was quite easy for me. In the first two years, I focused on gaining experience, testing time and learning as much as possible. I wanted to see tyre testing from different angles, companies and drivers. Today, I am happy to say that I have experience in tyre testing operations as a tyre mechanic, test assistant, instrumentation specialist and objective test driver. I am also engaged in testing tyres and vehicles for events and magazines,” she shared.

THE EVOLVING ROLE OF TYRE TESTING

Tyre testing has evolved over the years, from physical and mechanical assessments to indoor methods, including Tyre-in-the-Loop (TiL) testing, a form of hardware-in-the-loop (HiL) simulation. However, despite technological advancements, many tests still need to be conducted in real-world conditions to determine optimal solutions.

For example, a vehicle travelling in a sandy environment at a particular tyre pressure will have different braking times even at the same speed. The steering response, traction at different corners and slippage will also vary.

“I find simulators to be a good tool for all drivers and for hardware development. However, no one knows exactly how they will impact testing in the future. Many questions remain, and some conditions and types of tests cannot yet be simulated accurately. As a test driver, my main expertise is in winter testing. From my experience, winter conditions are particularly difficult to replicate artificially. Winter is a living, breathing element of nature, making it hard to forecast, as conditions can change very quickly,” she explained.

For tyre manufacturers, real-world testing is essential for finding the right conditions and weather. For instance, summer tyres cannot be tested in winter, nor can Nordic spike tyres be tested in warm conditions. “It is a challenge for companies to run tyre tests year-round and across different locations. Agility is key,” Raatikainen added.

Tyre testing falls into two main categories: objective and subjective. Objective testing relies on instruments to assess tyre performance, while subjective testing depends on the driver’s evaluation.

“As a freelancer, I work across different processes. Transparency with clients is my priority. It’s about what I do and how I do it. Trust is one of the key values I bring to the table,” she explained.

KEY LEARNINGS & TYRE SAFETY

As a test driver, Raatikainen has firsthand experience of how tyre choices impact performance and safety in different conditions.

“Statistics show that one of the most common mistakes drivers make is using the wrong type of tyres for their environment and weather conditions. When selecting tyres, it’s crucial to consider two key questions: Where will I be driving, and in what weather conditions? These simple considerations can significantly impact safety,” she added.

Most tyres have a wear indicator on the tread to signal when they need replacement, but these warnings are often ignored.

According to data from the Ministry of Road Transport & Highways (MoRTH), India recorded 461,312 road accidents in 2022, resulting in 155,781 fatal cases. Despite tyres having a significant influence on vehicular control, they are rarely cited as a primary cause of accidents.

When replacing tyres, it is also crucial to check their manufacturing date. Raatikainen emphasises that even a ‘new’ tyre must be evaluated based on its production date, as rubber degrades over time, regardless of use.

“Regularly checking tyre condition is just as important as choosing the right type. Ensure tyres have adequate tread depth, are free from cracks or bulges and are properly inflated. These simple maintenance habits can extend tyre life and improve safety,” she added.

FUTURE TRENDS IMPACTING THE TYRE INDUSTRY

New-age vehicles and tightening regulations are pushing industry players towards sustainability and reducing their carbon footprint.

For the tyre industry, environmentally friendly sourcing, production and materials remain key focus areas. From a tester’s perspective, what does the future hold?

“I am excited about advancements in simulation technology and their impact on the tyre industry. Another major trend is the growing emphasis on indoor testing for winter tyres, which addresses unpredictable weather challenges and helps distribute testing workloads more efficiently,” she said.

A third emerging trend is smart tyre technology.

“While modern vehicles are equipped with advanced systems, tyres have yet to integrate similar innovations. The questions of when this technology will arrive, how it will develop and what features it will bring are incredibly exciting. I look forward to seeing how smart tyres will enhance safety, performance and the driving experience,” Raatikainen concluded.

Comments (0)

ADD COMMENT

Link Copied!

Following the 2025 General Assembly, Law Hieling has been elected to the Global Platform for Sustainable Natural Rubber (GPSNR) Executive Committee to represent the Manufacturer category. His 27-year international career at Michelin, encompassing roles in finance, commercial sales, distribution and his current leadership in natural rubber purchasing, provides a profound, ground-level understanding of the global tyre industry.

This extensive background has given him a clear appreciation for the intricate balance between commercial needs and ecological responsibility. He is committed to leveraging this perspective to help drive the collaborative, transparent and equitable solutions that are essential for a genuinely sustainable natural rubber value chain, benefiting both people and the planet.

Hieling said, “I look forward to contributing to the work of the Executive Committee in advancing responsible practices across the natural rubber sector.”

Comments (0)

ADD COMMENT

Link Copied!

As the world grapples with the environmental challenges of discarded tyres, IIT Bombay researchers are developing sustainable solutions by repurposing waste rubber into innovative construction materials. Nilesh Wadhwa reports on how their work not only aims to mitigate landfill waste but also offers unique thermal, electrical and structural benefits for future infrastructure.

With over a billion tyres discarded globally each year, the world faces an escalating crisis in managing tyre waste. Beyond the mounds of rubber in landfills, the environmental and health hazards from tyre degradation, microplastics and toxic emissions are profound. However, a team of researchers at the Indian Institute of Technology (IIT) Bombay is charting a sustainable path forward. By transforming waste tyres into innovative construction materials – Rubcrete, which is a form of concrete mixed with shredded waste tyres. This is said to not only provide strength to the material but also make it more environmentally friendly. The idea is to turn an environmental problem into a valuable resource for civil engineering.

In an interaction with Tyre Trends, Prithvendra Singh, a principal researcher at IIT Bombay, explained the motivations behind this ground-breaking research. “The main aim of this research was to address the dual challenge of excessive end-of-life tyre (ELT) accumulation and the unsustainable depletion of natural aggregates due to ever-rising demand in infrastructural development,” he stated.

By converting waste rubber into engineered rubber aggregates (RA) and rubber-plastic blends (RPB), the team seeks to not only reduce landfill dependency but also enhance the sustainability of construction materials.

This pioneering approach is timely. The sheer scale of tyre waste, with millions of tonnes generated annually, has far-reaching consequences. Tyres are durable, non-biodegradable and pose serious fire hazards.

“One of the most overlooked issues is the generation of microplastics and toxic volatile compounds through tyre wear and tear, degradation, weathering or fires. Landfilled rubber fires can take months to extinguish and result in the emission of carcinogenic gases. These pose risks to human health and ecosystems, and their long-term contamination potential – especially via water, soil and air – is often overlooked in conventional waste management frameworks,” emphasised Singh.

FROM LAB TO FIELD

The IIT Bombay team’s research has revealed promising properties in both RA and RPB, which could revolutionise the use of secondary materials in civil engineering.

Singh elaborated on the mechanical characteristics, “RA and RPB exhibit significantly lower stiffness and higher deformability than natural aggregates, which makes them suitable for specific geoenvironmental applications but limits their use under high structural loads.”

While these properties may exclude them from load-bearing infrastructure, they open up opportunities in other areas. “Despite their lower mechanical strength, both materials demonstrate promising insulation characteristics and environmental safety under controlled conditions,” Singh added.

Thermal and electrical insulation capabilities are where these materials truly shine. “Both RA and RPB have superior thermal resistivity compared to standard sand, confirming their suitability for thermal insulation. Electrically, dry RPB shows the lowest conductivity, making it highly suitable for electrical insulation applications. Both materials also act as excellent dielectric materials over a broad frequency range,” Singh explained.

These characteristics make them ideal for construction projects where insulation and resistance to extreme temperatures or electrical fields are critical, such as in utility corridors or specialised building applications.

However, the journey from laboratory research to real-world applications is not without its challenges. “The lower stiffness of RA leads to higher vertical deformation under applied loads, making them less suitable for high-load applications such as base layers of highways,” Singh pointed out.

“However, they are ideal for lightweight fill applications like embankments or drainage layers, where flexibility and energy absorption are more beneficial than stiffness,” he added.

This insight highlights the potential for using RA and RPB in applications where traditional materials fall short, such as in earthquake-prone regions or on unstable soils where flexibility can mitigate damage. The process of creating RA and RPB depends heavily on the methods used to shred and process waste tyres.

SHREDDING METHODS: BALANCING COSTS AND PERFORMANCE

Singh outlined the pros and cons of various shredding technologies. “Ambient shredding is cost-effective but produces rough-surfaced particles, which exhibit better interaction in cement and polymer composites,” he noted. “Cryogenic shredding yields smoother particles with a broader size distribution but poorer bonding characteristics, and the created particles are generally suitable for turf or sports surfaces. Water-jet grinding offers finer control over particle size but comes at high energy and equipment costs.”

Each method results in materials with distinct properties, influencing their performance in construction applications.

Real-world validation is a crucial step in advancing this technology. To this end, IIT Bombay has partnered with GRP India, a leader in rubber recycling.

“We are currently collaborating with GRP to venture into production and field applications of these sustainable aggregates,” Singh revealed. “This partnership provides a foundation for scaling up through industrial-grade shredding, blending and real-world performance validation.”

These collaborations not only bring academic research closer to commercial implementation but also offer a model for future partnerships between academia and industry.

Of course, environmental safety remains a central concern in adopting new construction materials, especially those derived from waste. Leaching of metals and organic contaminants can pose long-term risks if not properly managed.

Singh’s team addressed these concerns through rigorous testing. “ICP-AES analysis showed that heavy metals like Pb and Zn are present in low concentrations, well within permissible limits,” he reported. “Previous studies corroborate that such materials typically stay within permissible toxicity limits under standard conditions. However, long-term leaching behaviour under varied field conditions remains necessary to confirm safety under varying environmental exposures.” This underscores the need for comprehensive testing and monitoring to ensure environmental safety.

THE ROAD AHEAD

Looking forward, IIT Bombay’s research agenda is ambitious. Singh described plans for further experimentation to expand the applications of RA and RPB. “We are currently planning long-term loading-unloading experiments and elevated temperature testing to establish the thermo-mechanical response of RA and RPB under realistic field stresses,” he said. “These experiments aim to address limitations in durability data and expand application potential. Also, future experiments will simulate realistic landfill environments, including interactions with leachate, microbes, humidity and temperature, to understand long-term behaviour.” Such studies will be essential for certifying these materials for broader use in civil engineering.

Could tyre-derived materials eventually replace traditional aggregates in certain applications? Singh is optimistic. “Yes, particularly in non-structural or semi-structural applications such as leachate drainage layers, landfill covers, thermal insulation barriers and lightweight embankments. The lightweight, high porosity and insulation capabilities of the RA and RPB present unique advantages that traditional aggregates cannot provide,” he said.

This vision aligns with global efforts to promote circular economies and reduce reliance on finite natural resources.

Responding to his expectations from the industry, Singh stated that stakeholders need to support the integration of sustainable materials into mainstream construction.

“The message I would like to convey to the academicians, tyre industry stakeholders and policymakers is to embrace innovation through cross-sectoral collaboration. Sustainable solutions like RA and RPB not only offer environmental remediation but also open new markets for green construction materials. With the right policy incentives, certification frameworks and industry support, we can mainstream these materials and accelerate the transition towards a circular, resilient economy,” he said.

IIT Bombay’s work exemplifies how innovative research, when coupled with industry collaboration and policy support, can turn a pressing environmental problem into a sustainable solution. By reimagining waste as a resource, Singh and his team aim to not only address the tyre waste crisis but also lay the groundwork for more resilient and eco-friendly infrastructure in the future.

Comments (0)

ADD COMMENT

Link Copied!

Pirelli has confirmed that all five of its new slick tyre compounds will be used during the first three races of the 2026 Formula One season, beginning with Australia, China and Japan.

The Italian tyre supplier said the compound selections for the opening races mirror the approach taken in 2025, with nominations spanning from the hardest to the softest compounds to suit varying circuit demands.

For the season-opening Australian Grand Prix in Melbourne, scheduled for March 6–8, teams will have access to the C3, C4 and C5 compounds. The same combination in 2024 led to a two-stop race strategy using all three tyres. Earlier this year, however, variable weather conditions limited the use of slicks, with intermediate tyres required for much of the race.

At the Chinese Grand Prix in Shanghai, from March 13–16, Pirelli has selected the mid-range compounds: C2, C3 and C4. The 5.451-kilometre circuit, which was fully resurfaced this year, places average lateral and longitudinal loads on the tyres, with greater wear on the left-hand side of the car. Shanghai will again host the first sprint weekend of the season.

Suzuka, which hosts the Japanese Grand Prix from March 27–29, will require the hardest allocation, with C1, C2 and C3 nominated. The circuit is regarded as one of the most demanding on tyres. In 2025, low track temperatures and reduced graining allowed drivers to complete the race with a single pit stop, whereas higher thermal degradation in 2024 required at least two stops.

Drivers will arrive in Melbourne after an extended pre-season testing programme. The first test will take place behind closed doors in Barcelona from January 26–30, marking the first on-track running of the new tyres on 2026-specification cars. Each team will select three days of running during the five-day test. Two further tests will be held in Bahrain, from February 11–13 and February 18–20.

Pirelli said the use of all five slick compounds across the opening races will allow it to assess performance gaps between the tyres under competitive conditions, as well as their resistance to graining and overheating. The data will be used to inform compound selections for the European rounds later in the season.

Comments (0)

ADD COMMENT

Link Copied!

Shandong Dawn Polymer Material Co., Ltd has agreed to acquire an 80 per cent stake in Ningbo SK Synthetic Rubber Co., Ltd for RMB515.97m, as the Chinese polymer materials group seeks to extend its elastomer value chain and strengthen its EPDM rubber capabilities.

Dawn Polymer’s board approved the transaction on 10 December 2025. The company will use internal funds to purchase the stake from SK Geo Centric Investment Hong Kong Limited. Upon completion, Ningbo SK Synthetic Rubber will become a controlled subsidiary and be included in Dawn Polymer’s consolidated financial statements.

The acquisition is subject to shareholder approval but does not constitute a related-party transaction or a major asset restructuring under Shenzhen Stock Exchange rules, the company said.

To support stable operations following completion, certain patents, proprietary technologies and trademarks related to Ningbo SK’s products are expected to be transferred to Dawn Polymer by affiliates of the seller, SK Geo Centric Co., Ltd and/or SK Innovation Co., Ltd. The intellectual property transfer, which has not yet been finalised, is capped at RMB 64.7 m based on an assessment as of 30 June 2025.

Founded in 2012, Ningbo SK Synthetic Rubber is based in the Ningbo Petrochemical Economic and Technological Development Zone. It focuses on the production and sale of EPDM rubber, along with related technical services.

As of 30 June 2025, the company reported total assets of RMB783.0m and net assets of RMB343.8m. Revenue for the first half of 2025 was RMB568.5m, according to audited financial statements.

An asset-based valuation placed the company’s net asset value at RMB647.3m, representing an increase of 88.27 per cent over book value, primarily due to the revaluation of fixed and intangible assets.

Dawn Polymer said the acquisition would enhance its integrated “polymerisation–modification–application” industrial chain. EPDM rubber is a key raw material for the company’s dynamic vulcanisation products, and in-house production is expected to reduce reliance on external suppliers and improve supply chain resilience.

The company cautioned that the transaction remains subject to regulatory approvals and integration risks following completion.

Comments (0)

ADD COMMENT

Link Copied!