The tyre industry is undergoing a profound transformation, driven by sustainability, digitalisation and material innovations. As manufacturers push the boundaries with high-silica compounds, recycled rubber and alternative materials like dandelion rubber, the mixing process faces increasing complexity. Traditional methods struggle to maintain efficiency, necessitating advanced technologies like HF Mixing Group’s Tandem mixing and smart solutions. With automation, and precision engineering, the industry is redefining efficiency and sustainability.

Tyres are a sheer example of impeccable chemical engineering. From passenger car radials (PCR) to off-the-road (OTR), these technical marvels can carry loads weighing tonnes even in the deadliest of roads. For centuries, they have been the backbone of logistics, transportation and more.

But making a tyre is not an easy task. It involves a tremendously meticulous process ranging from raw material selection to mixing compounds for deriving the exact formula that gives these rubber casings durability, elasticity and more.

As the global tyre industry undergoes a transition in every critical aspect, it also sees a change in compounds that go into mixtures. This in turn paves the way for upgradation in technologies.

According to HF Mixing Director of Product and Services, Nils Spier, “The growing use of silica in passenger tyres is reshaping the industry with specifications now reaching 100, 130 and even 180 parts per hundred rubber (PHR). Levels above 150 PHR have recently gained traction, particularly in the premium segment, where high-performance tyres demand lower rolling resistance and improved wet grip.”

On the other hand, he revealed to Tyre Trends that increasing silica content presents technical challenges. Standard single-mixer setups face limitations due to the need for adequate silanisation time. When more silica is added, the process becomes more complex and time-consuming. HF Mixing Group’s Tandem mixing technology addresses this by transferring the process from an upper to a lower mixer, preventing capacity losses and optimising mixing efficiency.

“Dispersion is another critical factor as silica’s inherent stickiness complicates processing. The upper mixer completes the dispersing task, utilising a geometry established in the industry for over 20 years. The latest-generation PES7 mixer builds on this, ensuring the same high-quality results. Once the compound moves to the lower mixer, further refinements occur. A specialised bottom mixer rotor TRC, developed to enhance cohesion and compacting, helps mitigate issues where certain components tend to crumble. Without this step, batches risk fragmenting into plates and uneven portions, complicating further processing. The Tandem mixer’s rotor system ensures that the full batch remains intact, facilitating smooth transfer onto a mill or twin-screw extruder,” he added.

In a nutshell, the Tandem mixing technology allows tyre manufacturers to accommodate higher silica content without compromising processing efficiency or final product quality.

HF’s latest advancements in mixing technology are delivering notable efficiency improvements, particularly in intermeshing rotor systems. The PES7 rotor, introduced around two years ago, has now been successfully deployed at multiple customer sites, showing strong results in both new and retrofit applications. The rotor upgrade offers an increased mixer empty volume plus higher possible fill factors, resulting in a 10–15 percent increase in throughput without compromising cycle time or product quality.

UPGRADING MIXING TECHNOLOGY THROUGH SMART DIGITAL SOLUTIONS

According to Spier, “Tandem and the smart digital mixing solutions represent a holistic approach to optimising the mixing process. The smart final mixing solution is a software and service concept developed by HF, designed to work in close collaboration with customers. The process begins with defining the customer’s target recipe and process parameters, followed by calibration tests conducted on-site.”

Calibration tests involve capturing the fingerprint of the mix including rotor speed, drive data, temperature control unit settings and ram seating time. This data is then processed through the company’s proprietary algorithms and material models, which simulate various mixing scenarios to identify optimal process parameters.

The simulation models predict key variables such as batch temperature development at different rotor speeds and the impact of ram lift adjustments to improve compound aeration. This approach eliminates the need for extensive design of experiment, accelerating the optimisation process without compromising on productivity of the production equipment.

The smart mixing solution is specifically designed for HF mixers as the company has precise knowledge of the machine parameters, cooling surfaces and other mixer-specific properties. The validation trials conducted post-simulation have demonstrated cycle time reductions up to 20 percent, translating into significant efficiency gains for manufacturers.

Moreover, the company’s smart mixing approach optimises key parameters to enhance energy efficiency and quality in the mixing process. Cycle time is a primary focus with proprietary algorithms minimising unnecessary processing steps while ensuring uniform distribution and dispersion of the curative package.

Rotor speed plays a crucial role as it must be adjusted at different phases of mixing. A higher speed may be beneficial in the initial dispersion stage, but excessive speed leads to rapid temperature increases, negatively affecting compound properties. The company’s models balance rotor speed, energy efficiency and temperature for optimal results.

Lastly, fill factor is essential for both quality and efficiency. Overfilling can result in uneven mixing and longer processing times, while underfilling reduces throughput and jeopardises batch quality. The company’s Smart Final Solution ensures that the fill factor is set to an ideal level for maximum quality and throughput.

TECHNOLOGICAL INCLUSIVITY

The company’s approach to smart mixing is currently data-driven and reliant on process specialists, but the role of artificial intelligence (AI) in this field is expected to grow. “While AI has the potential to make autonomous decisions and process adjustments in the future, we still integrate human expertise alongside digital tools to ensure process reliability. Factors such as installed downstream equipment, mixer conditions and on-site variations must be considered, which currently require operator input. However, we are already exploring AI-driven solutions such as predicting batch temperature, optimising carbon black incorporation and refining oil dispersion, which could eventually enhance process automation,” informed Spier.

While digitalisation is a key part of the company’s transformative roadmap, AI’s role is still in development. Instead of full AI automation, it employs advanced models and algorithms that run extensive simulations to optimise mixing conditions without compromising quality. These models provide real-time feedback on the best possible process adjustments, delivering improvements in efficiency, quality and consistency.

Alluding to whether older mixers installed 5 to 10 years ago can be retrofitted with recent upgrades, he noted, “There is a possibility of retrofitting smart solutions to enhance its capabilities. Rather than relying solely on AI, we offer in-line process monitoring, where historical mix data is used to establish a reference baseline with tolerance bands. This allows for real-time adjustments.”

The mixing process is fully automated with step-related control systems defining key parameters such as mixing time, specific energy input and rotor speed per step, batch temperature to ensure precision and consistency. Every mixing step can be supported by HF’s unique intelligent controller technology such as intelligent Ram control iRam, the HF constant temperature controller or iXSeal Dust Stop Lubrication Controller.

PROCESS ADAPTATION

Tyre makers are increasingly experimenting with alternative materials, such as recycled rubber and dandelion-derived compounds, which significantly impact the mixing process. Adjustments are necessary to maintain efficiency and quality, as non-traditional materials alter torque curves and require parameter modifications.

Moreover, different category of tyres requires different mixing processes due to variations in tread compound formulations. Passenger car tread compounds typically differ from OTR formulations, necessitating specific dispersion techniques to achieve the desired performance characteristics.

With that said, it is prudent that companies adapt to changing processes fuelled by market demand. “The company provides a range of rotor solutions to optimise these mixing processes. Tangential rotors are designed to enhance master batch dispersion, especially the NST rotor, ensuring uniformity in the compound. ZZ rotors are mainly used for final batch production, offering precision in mixing the final formulation. In addition, the ZZ rotor geometry has proven strong performance in Master Batch Silica Processing. Additionally, intermeshing rotors are employed to manage specialised compounds, providing better control over the mixing process for unique material requirements,” revealed Spier.

Furthermore, material innovations are significantly impacting the mixing process, requiring process adaptations to maintain efficiency and achieve consistent final results. The use of alternative materials such as recycled rubber or non-traditional sources like dandelion rubber, rCB and other recycled materials alters the torque curves during mixing. These changes necessitate adjustments to mixer parameters, ensuring optimal dispersion and processing without compromising product quality.

To support customers in navigating these challenges, HF’s process experts collaborate closely with them through the technical centre in Germany and worldwide operating process engineers. By testing new processes before full-scale industrialisation, the company helps identify and resolve potential issues in advance.

INDUSTRY SHIFTS

The shift towards premium tyres is shaping the European, Asian and North American markets differently. In Europe, manufacturers are increasingly focusing on premium and OTR tyres while scaling back production of 15–17-inch models and consolidating operations.

This shift is driving higher demand for advanced compounds and increased silica usage. However, capacity expansions remain limited with most investments directed towards equipment upgrades rather than new production facilities.

In Asia, particularly in India and China, greenfield projects are on the rise due to strong automotive demand. This expansion reflects the region’s growing role in the global tyre industry as manufacturers invest in new facilities to meet both domestic and export needs. North America, on the other hand, is seeing a mix of replacement investments and selective large-scale expansions with companies balancing modernisation efforts and strategic growth.

Beyond these key regions, North Africa, specifically Algeria, Morocco and Egypt, is emerging as a new manufacturing hub. This region is gaining traction in the global tyre industry, an area where it previously had little presence. With increasing investment and infrastructure development, North Africa is positioning itself as a competitive player in tyre production.

With many manufacturers shifting to smaller campaign to accommodate different tyre recipe, flexibility in the mixing process has become essential. HF’s automation system is designed to handle these challenges by allowing quick modifications to production plans.

Manufacturers can adjust torque, batch sizes and compound quantities without causing disruptions. Additionally, the manufacturing execution system ensures seamless execution, making even short production runs of 5 to 10 batches efficient and cost-effective.

MARKET EXPANSION

Besides Europe, Asian markets such as China and India remain key growth locations for the company. As manufacturers in these regions adopt new technologies to meet evolving industry standards, the demand for efficient and adaptable mixing solutions continues to rise.

“We continue to invest heavily in innovation and research and development to grow in the Asian market. Allocating three percent of our revenue to innovation and 4.5 percent to development, the company ensures that 35 percent of its projects focus on sustainability. By maintaining technology leadership, we deliver high-quality, high-functionality equipment that supports the growth of new and established manufacturers in the region,” informed Spier.

While HF is known for its high-precision machines used by top-tier tyre manufacturers, it also caters to tier 2 and tier 3 players. The company supplies to many smaller manufacturers.

On the context of sustainability, Spiers noted, “Sustainability is a core focus of our research and development strategy, aligning with the ambitious environmental targets set by tyre manufacturers worldwide. We integrate sustainability by developing energy-optimised mixers with efficient drive setups, introducing new hydraulic power units that significantly reduce power consumption and implementing incremental efficiency improvements such as enhanced heat management to extend machine longevity.”

Lastly, the company provides comprehensive service beyond commissioning, including operator training, process optimisation and trouble-shooting, round-the-clock support via ticket and hotline systems and fast-response local service teams across China, South-East Asia, India, North America, North Africa and Europe.

JK Tyre & Industries is aiming for double-digit revenue growth in FY2026, outpacing its forecast for single-digit expansion across the broader tyre industry. Managing Director Anshuman Singhania outlined the company’s ambitions during a post-earnings media call, underscoring confidence in demand recovery and strategic market positioning.

Q1 Performance Overview

For the first quarter of FY2026, JK Tyre reported revenue of INR 38.91 billion, with EBITDA at INR 4.24 billion, translating to a margin of 10 percent. Net profit stood at ₹1.55 billion — up 51 percent compared with the previous quarter, but down 21 percent YoY.

Singhania attributed the annual decline to muted original equipment (OE) demand, particularly in truck and bus radial (TBR) volumes, alongside higher raw material costs compared to the same period last year. He also highlighted an adverse impact from the company’s Tornel business in Mexico, which faced uncertainty due to tariffs on exports from Mexico to the United States, dampening volumes.

Resilience in Domestic and Export Markets

Dr Raghupati Singhania, Chairman and Managing Director, JK Tyre & Industries, said, “The growth momentum in domestic markets remained robust in Q1, with JK Tyre clocking a sales growth of 11 percent YoY, as contributed by a steady demand for our products in both replacement as well as OE segments, underscoring JK Tyre’s continued focus on core growth drivers and strengthening market presence.”

“Despite a challenging and uncertain macro-economic environment, exports of passenger car tyres witnessed a strong traction both on QoQ and YoY basis, signifying pull for our products and enhanced brand perception in the global markets,” said Dr Singhania.

Operational efficiencies and strategic pricing supported performance, even as natural rubber prices remained elevated. Subsidiaries Cavendish (India) and Tornel (Mexico) continued to contribute significantly to the group’s consolidated financials.

Operational efficiencies and strategic pricing supported performance, even as natural rubber prices remained elevated. Subsidiaries Cavendish (India) and Tornel (Mexico) continued to contribute significantly to the group’s consolidated financials.

Regarding trade tensions between India and the US, Anshuman Singhania noted that exports from India to the US account for only around 3 percent of JK Tyre’s revenue and could be redirected to markets such as Mexico, Latin America, Brazil and the UAE if required. With zero tariffs in Mexico, JK Tyre can utilise its production base there to meet demand for both passenger and truck radials. The EU and UK, where JK Tyre holds a strong position in the TBR segment, also remain tariff-free.

Capacity expansion

The company’s INR 14 billion capital expenditure plan is progressing on schedule, covering passenger car radial (PCR), TBR and all-steel truck radial projects. For the year, investment is expected to total INR 9-10 billion, aimed at boosting production capacity by 30-40 percent.

A key driver for future profitability is the shift towards premium products. The share of 16-inch and above passenger car tyres in JK Tyre’s portfolio has grown from 18 percent in FY2020 to 25 percent in FY2025, with a target of 40-45 percent over the next two to three years. This change is being fuelled by rising SUV sales, larger rim sizes in entry-level cars and strong export demand.

The company has also developed a complete range of tyres for electric vehicles, spanning commercial truck radials, bus tyres, passenger radials and two/three-wheeler tyres  Major OEMs such as Ashok Leyland’s Switch Mobility and Tata Motors are sourcing these products, including for last-mile connectivity vehicles and newly launched EV buses.

Market Outlook

The replacement market has been a bright spot, with passenger radial volumes up 32 percent year-on-year and truck radial volumes growing in the high single digits. JK Tyre expects demand to strengthen in the second half of FY2026, supported by infrastructure development, a favourable monsoon, potential interest rate cuts, and improved consumer liquidity.

Anshuman Singhania stressed that the worst of raw material price pressures appear to be over, paving the way for margin improvement as the product mix shifts and capacity utilisation rises. With the small car segment’s gradual decline offset by growth in premium categories, JK Tyre remains confident in sustaining momentum.

“Overall, India is poised for growth,” Singhania concluded. “We see positives across the board — from infrastructure push to evolving consumer preferences — and we are well-positioned to capitalise on these trends.”

Yokohama Rubber has begun supplying its ADVAN V61 tyres as original equipment for BYD’s new SEALION 6 DM-i SUV, marking the Japanese manufacturer’s first OE partnership with the Chinese carmaker.

The SEALION 6 DM-i, a plug-in hybrid SUV launched by BYD Company Ltd. this July, is being factory-fitted with 235/50R19 103V size ADVAN V61 tyres. The announcement comes as Yokohama seeks to grow its footprint in China’s fast-evolving electric and hybrid vehicle market.

The ADVAN V61 is part of Yokohama’s global flagship ADVAN range and is positioned as a premium SUV tyre. The company said the tyre “offers ADVAN’s hallmark premium-grade driving performance, along with a high-level balance of fuel and energy efficiency, handling stability, and quietness, achieving both comfortable city driving and long-distance touring for heavyweight SUVs.”

The SEALION 6 DM-i combines a 1.5-litre naturally aspirated petrol engine producing up to 74kW with an electric motor generating 160kW. Buyers can choose between 18.3 kWh and 26.6 kWh blade battery options, offering electric driving ranges of 93km and 130km, respectively. All models come equipped with advanced driver assistance systems as standard, and the exterior design draws inspiration from the concept of “ocean aesthetics.”

Sumitomo Rubber Industries Ltd said its subsidiary Dunlop Tyre Japan Ltd has completed a Japan Fair Trade Commission investigation into automotive all-season tyre sales after the regulator approved a commitment plan submitted by the unit.

The probe, which examined the subsidiary’s sales practices, concluded without the commission identifying any violation of Japan’s Antimonopoly Act, Sumitomo Rubber said in a statement.

Under Japan’s commitment procedures, companies can submit plans to address potential competition concerns without admitting wrongdoing, allowing them to resolve investigations while avoiding formal sanctions.

"We deeply apologise for the great trouble and anxiety that we have caused to all concerned, including our clients and business partners,” the tyre maker said.

Belgian steel wire maker Bekaert reported resilient first-half 2025 earnings as strong cash generation and cost control offset softer sales, but warned that tariffs and currency pressures are weighing on demand.

The company posted consolidated sales of €1.9 billion, down 5.2 percent year-on-year, with volumes declining 2.6 percent and price/mix effects stripping out a further 2.2 percent. Underlying EBIT slipped 16.2 percent to €171 million, delivering a margin of 8.8 percent compared with 9.9 percent a year earlier.

Free cash flow surged to €123 million from €43 million in the prior-year period, driven by a €135 million reduction in working capital and €21 million in cost savings as the company continued to streamline operations and rein in capex. Net debt fell to €327 million from €399 million despite a continuing €200 million share buyback programme, €74 million of which has been completed.

“We have continued to focus on what we can control best – cash flow and costs - and have significantly reduced overheads and working capital in H1 2025,” chief executive Yves Kerstens said. “Equally, I am very pleased with the hard work of our teams fighting for volumes in the current challenging markets.”

He added: “We are also taking further steps to make our business units more autonomous and agile. Therefore, I am very confident that we will come out of the current business environment stronger and more cost competitive than ever before.”

Bekaert said volumes were particularly strong in its Steel Wire Solutions and Rubber Reinforcement divisions in the United States and China, while European and Latin American demand lagged. Its Brazilian joint ventures delivered €24 million in net profit share, up from €20 million a year ago.

However, the group cautioned that growing trade tensions – including a rise in US steel tariffs from 25 percent to 50 percent – and the weakening of the US dollar and Chinese yuan against the euro were eroding pricing power and softening orders.

“Following a period of resilience in Q2, the tariff uncertainty and weakening economic outlook has started to have an impact on demand,” Bekaert said.

The company now expects slightly lower full-year 2025 sales on a like-for-like basis, with an underlying EBIT margin of between 8.0 percent and 8.5 percent, down from 8.8 percent in the first half.