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.

Goodyear Tire & Rubber has elected Jason J Winkler to its Board of Directors, effective 15 May 2025, the company announced today.

Winkler, who currently serves as executive vice president and chief financial officer of Motorola Solutions, will join Goodyear's Audit Committee and Committee on Corporate Responsibility and Compliance.

"We are pleased to welcome Jason Winkler to Goodyear's Board of Directors," said Chairman of the Board Laurette T. Koellner. "His extensive global finance leadership experience will be an incredible asset as Goodyear continues to drive substantial company and shareholder value by delivering significant margin expansion, an optimised portfolio and reduced leverage under the Goodyear Forward transformation plan."

Winkler brings over two decades of financial leadership experience to the tyre manufacturer's board. Since joining Motorola in 2001, he has held numerous financial leadership positions across investor relations, global channel management, mergers and acquisitions, and product operations.

In his current role at Motorola Solutions, Winkler oversees the company's financial strategy and leads its finance, supply chain and information technology functions. He has been instrumental in driving significant transformation at Motorola, achieving growth, margin expansion and balance sheet improvements that have contributed to strong shareholder returns.

Prior to his tenure at Motorola, Winkler worked at Oracle and Hewitt Associates, now AON. He holds a bachelor's degree in business administration from Valparaiso University and an MBA from the University of Chicago's Booth School of Business.

The European replacement tyre market displayed mixed signals in the first quarter of 2025, with consumer tyres growing modestly while truck and agricultural segments contracted, according to data released by the European Tyre and Rubber Manufacturers’ Association (ETRMA).

Consumer tyre sales grew 3 percent in the first quarter compared to the same period last year, continuing the recovery observed in the second half of 2024. The all-seasons segment emerged as the standout performer with a robust 14 percent growth, whilst winter tyres rose 5 percent. Summer tyres declined by 3 percent.

"In Consumer tyres, the recovery observed in the second half of 2024 (+8 percent) has continued in the first quarter of 2025. Volumes were close to those reached in the first quarter of 2019, before the impact of the pandemic," said Adam McCarthy, ETRMA's Secretary General.

The truck tyre segment, however, showed weakness with a 4 percent decline compared to Q1 2024 and remains 11 percent below pre-pandemic levels. Agricultural tyres mirrored this downward trend with a 4 percent reduction, whilst motorcycle and scooter tyres grew 7 percent against what the association described as "a relatively weak first quarter of 2024".

McCarthy attributed the truck segment's poor performance to "economic and political uncertainties" affecting the market.

The data reveals a striking trend in tyre imports, with passenger car and light truck tyre imports into Europe surging 12 percent in the first two months of 2025 compared to the same period last year. This follows a 17 percent increase in 2024, with Chinese imports up 18 percent, Korean imports up 30 percent, and Indian imports up 34 percent.

Industry analysts suggest this import surge reflects both consumer cost pressures and production challenges facing European manufacturers.

"Pressure on household budgets has increased demand for low-cost imports whilst European tyre production costs, particularly for energy, have increased at a faster pace than in other regions," the ETRMA report noted.

In a separate trend, truck and bus tyre imports from outside Europe grew 8 percent in early 2025, with ASEAN countries now representing over 60 percent of imported volumes. Vietnam's share has grown significantly, accounting for over a quarter of imports in the period.

The association also highlighted that despite significant changes in mobility patterns, with car traffic yet to fully recover from pandemic lows, the total light vehicle fleet in Europe grew by 1.4 percent in 2024, adding more than 4 million vehicles. Light commercial vehicles showed stronger growth, driven by e-commerce and last-mile delivery expansion.

The report estimates that nearly 4.5 million tonnes of used tyres were generated across Europe in 2024, with only about 600,000 tonnes reused or retreaded.

Ralson Tire North America (RTNA) has made some strategic changes in its top management with an aim to strengthen its foundation for the future. The company has promoted Mark Roe to Vice President of Sales for the company. Roe previously served as Vice President – Sales (West) for the company. Apart from this, Christy Neito has been promoted to the role of Business Manager for RTNA.

According to the company, Roe will work closely with all RTNA sales managers to assign roles and coordinate execution, which will improve performance and focus throughout RTNA.

Neito has over 20 years of expertise in operational administration, bookkeeping and office management. She joined RTNA in 2023. Neito will be in charge of banking and accounting coordination, cash management, compliance and administrative assistance for HR services as part of her enlarged duties.

RTNA Senior Vice President Brian Sheehey, said, “Mark brings over three decades of rich experience in domestic and regional sales within the tyre industry and has been an integral part of RTNA since 2024. His deep industry expertise and leadership will be key drivers in strengthening our sales organisation.”

“Christy’s expertise and collaborative approach will be pivotal as we scale operations. We are confident that these changes will further propel RTNA’s growth trajectory and strengthen our foundations for the future,” added Sheehey.

Hyderabad-based manufacturer targets 2 million monthly units within five years

In recent years, Hyderabad-based ARL Tyres has proven to be a versatile and innovative player with ambitious strategic goals. From providing specialised rubber items to the Indian military to creating innovative solutions for the emerging electric vehicle segment, ARL Tyres has shown remarkable resilience since its inception as a family enterprise in 1983.

With production levels now crossing 150,000 units per month and ambitious goals to reach two million units per month in five years, ARL is placing itself at the cusp of conventional industrial manufacturing and future mobility solutions. Its recent appearance at the Ride Asia EV Expo showcased the company’s wide range of products and its dedication to supporting India’s developing transportation infrastructure with niche products such as Smart Tyres and terrain-specific Mud Master range.

Hyderabad-based ARL Tyres, a division of Agarwal Rubber Limited, recently showcased its products, including tyres and tubes, at the Ride Asia EV Expo held at Bharat Mandapam this year. The company has established itself as a trusted partner for the Indian Army and Indian Air Force. It offers a comprehensive range of products, including tyres for two-wheelers, three-wheelers, and Light Commercial Vehicles (LCVs). It is also known for manufacturing Smart Tyres.

Growth Plans

The types of tyres being produced at this company include those for ultra-light trucks, two-wheelers, forklifts, tractors and light trucks. The company manufactures approximately 12,000 tyres daily at its production facility, selling across different areas of the country due to a 400-strong network of exclusive dealers.

According to Gautam Ghosh, Head-West Zone at ARL Tyres, “We are very optimistic about tyre sales in 2025 as there is tremendous potential in the EV sector. So far, in 2025, we have been averaging close to 150,000 units per month. Expect us to touch 0.2 to 0.25 million units a month by the end of this year.”

Continuing the expansion plan, the company intends to touch at least two million monthly units in five years. This growth is supported by its extensive network of exclusive dealers distributed across various regions of India.

Technical Expertise and Manufacturing Capabilities

In 2000, ARL Tyres gathered in-depth knowledge about all the major tyre technologies, manufacturing processes and industry standards. Apart from tyres, this ISO 9001:2015-certified company is also known for manufacturing high-quality flaps, envelopes, curing bags, bladders and butyl tubes.

Today, the company boasts an ultra-modern tube manufacturing unit that produces roughly 50,000 high-grade butyl rubber automotive tubes. While the range begins with two-wheeler sizes, it also extends to the aviation and OTR (Off-The-Road) sectors

Defence Sector Connection

Since 1996, ARL’s technical expertise in rubber has enabled it to supply tubes to the Indian defence sector. The durability and performance of its products have made ARL a preferred OEM supplier for the Indian Air Force, Indian Army, BEML (Bharat Earth Movers Limited), and HAL (Hindustan Aeronautics Limited).

Products for E3W Segment

For the electric three-wheeler market, which includes auto-rickshaws (passenger and commercial) and e-rickshaws, ARL offers both tube-type and tubeless tyres in sizes 4.00-12 and 4.50-12. The company markets two brands for this vehicle category: the Savera and the Xtreme.

According to the company, individuals should choose the Savera for its performance, safety, and durability on urban and semi-urban roads. Its non-skid Depth (NSD) ranges from 5.5 mm to 6.5 mm, which gives it good grip and safety. It would be useful as a passenger and cargo tyre.

On the other hand, ARL Xtreme is a tube-type tyre that optimises long-lasting performance, grip and safety on various roads. It differs from the Savera in terms of design and safety. Unlike the Savera, an NSD of 9mm is available here. Engineers at ARL have created a stylish design for the Xtreme that balances aesthetics and functionality with advanced technology.

Global Reach and Partnerships

Beyond the domestic market, ARL exports its products to more than 60 countries worldwide. Over the years, ARL Tyres has forged a few partnerships with top brands and continues to do so. For example, the company partnered with Chandu Champion, cheered India at the Paris Olympics through its ‘Jeet ki Aur’ campaign, and sponsored RCB during IPL 2025.

Innovative Offerings

Among its unique propositions, ARL offers OEM test drives with new tyres at specific locations, allowing auto manufacturers to fine-tune vehicle designs according to tyres and provide targeted inputs. It also sells Smart Tyres with scientific tread designs for efficient movement. The cross sipes on these tyres differ greatly from regular tyres and help grip wet and muddy surfaces. Instead of relying on vehicle technologies, these tyres are themselves available with real-time monitoring capabilities.

Company History and Client Base

ARL was founded as a family business in 1983 and became a tyre manufacturing company. Mobility companies such as Maa Luxmi India and Ferranza Electric Vehicle Private Limited, which were present at the Ride Asia Expo EV, are clients of ARL, as are the OEM manufacturers Omaha, Arel and Yakuza. While ARL’s trials for the Thukral Electric Bike have already commenced, the dispatches have not yet begun.