In an era of heavier vehicles, rising torque loads and ever-larger wheel diameters, the tyre-wheel assembly (TWA) has quietly become one of the most critical systems influencing vehicle safety, durability and perceived quality. Yet for most consumers, it remains entirely invisible. According to Luc De Bruyne, OEM tyre-wheel assembly R&D specialist in the Department of Manufacturing and Innovation at Eurofit, that invisibility is precisely why the industry underestimates its importance.

Based in Zaventem, Belgium, the company operates as a high-precision service supplier for tyre–wheel assembly, focused on passenger cars and light trucks in the European market. It runs a network of 16 factories, supported by around 900 employees, and delivers a full set of assembly and logistics services. With an annual capacity of roughly 20 million tyre–wheel assemblies, production is supplied to more than 25 OEM locations across Europe.

From an OEM perspective, De Bruyne argues that tyre-wheel assembly can no longer be treated as a simple fitment task. “Due to the increase of load and power transmission of the cars, a correct seating of the tyre bead is more sensitive. The increased bead tension can result in a damaged tyre during mounting, which isn’t visible at the outside. A damaged bead can result in leakages and low-pressure during driving, which is a high risk of a safety issue during high-speed driving. In other words, what appears externally acceptable may already be compromised internally,” he explains.

This growing complexity is not adequately addressed by existing standards. While ETRTO, ISO, ASTM and JASO regulate individual components, there is no global standard governing the assembled wheel. In practice, this means quality depends heavily on internal OEM processes. As De Bruyne notes, “A TWA assembler must mount the components together with no damages to the product and the lowest level of risk of vibration on the car.” To achieve this, Eurofit and its partners develop internal process references with machine suppliers, such as mountability and integrity tests used to qualify new wheels. When a non-OK status is detected, suppliers are informed, and if no solution is found, components may be replaced entirely.

The business is structured as a longstanding 50:50 joint venture between Michelin and Continental, established in 1996. This partnership combines the technological depth, quality standards and global experience of two of the world’s leading tyre manufacturers. The JV structure underpins strong process discipline, continuous improvement and long-term stability for OEM customers.

The technical challenge intensifies as wheel sizes increase and tyre profiles become lower. Larger diameters bring not only harsher ride characteristics but also tighter tolerances across mounting, uniformity and balancing. De Bruyne outlines a suite of measures now required for high-performance wheels: checking rim run-out and match points to filter supplier deviations; guiding the tyre bead diagonally to reduce mounting forces; matching components to lower total uniformity (TU) levels; optimising bead seat geometry; measuring complete wheel run-out to achieve what he calls the ‘perfect circle’ and correcting balance through final audit controls linked to vehicle sensitivity. The payoff is clear – less vibration of a wheel results in a longer lifetime of the tyres and suspension system of the car.

The contrast between OEM-assembled wheels and typical aftermarket replacements remains stark. In Europe, De Bruyne identifies two aftermarket models. The first involves high-volume industrial assembly of wheel kits – often winter packages – using processes similar to OEM plants. “We recommend to order wheels from such entity to receive an upper grade quality level compared with the garage machine assemblers,” he says. The second model is the small local tyre shop, where limitations are far more pronounced. These workshops often use grade 2 or 3 tyres rather than the grade 1 tyres supplied to OEMs, apply grease-based lubricants forbidden in Tier 1 environments, rely on manual mounting without force control, inflate tyres without proper bead seat techniques and balance wheels on single machines without controlling clamping-device influence. “The manual mounting approach can result in a higher risk of vibration/sound level of the wheels to the car/driver/passenger,” De Bruyne warns. For OEMs, the objective is clear: the first test drive of a new car must feel fundamentally different from that of a used one.

Electrification has further raised the stakes. Higher torque loads and quieter powertrains mean that any wheel-induced vibration is far more noticeable. “Observation of increase of torque load on cars results in increase of tyre bead tension,” De Bruyne explains, along with higher surface roughness requirements on rim bead edges. Assembly processes now demand stricter control of mounting forces and higher-energy inflation using inflator bells. After inflation, micro bead correction is required to ensure full contact and maximise friction. Lubrication, meanwhile, must leave no residual grease, as this could allow bead slip under extreme acceleration or braking.

Eurofit’s position as an industrial service provider rather than a component manufacturer reflects broader shifts in vehicle production. A generation ago, car manufacturers assembled most parts themselves. “Due to the increase of complexity and need of assembling volume and faster cycle time of cars, a lot of key-assembling activities are outsourced,” De Bruyne says. This has freed space within vehicle plants, increased model variants and created demand for specialist know-how. Tier 1 component suppliers now deliver globally to wheel assembly plants located close to OEMs, enabling just-in-time supply with greater flexibility.

Logistics has evolved accordingly. Classic JIT lines are increasingly supplemented – or replaced – by batch production, sequencing centres and high-bay warehouses. De Bruyne describes specialised processes that keep wheels sequenced all the way to the OEM, including racks and trailers with walking-floor systems for direct unloading. Over the past 20 years, the explosion in variants has driven major upgrades in logistics software and product traceability. Such systems require constant monitoring and rapid deviation management to avoid production stoppages at the customer.

Despite all this, wheel assembly remains largely invisible to consumers – at least for now. De Bruyne believes this may change as EVs become dominant. With fewer vibration sources from engines and transmissions, wheel-induced disturbances move ‘on the horizon’, particularly as XL tyres and extreme sizes – up to 25 inches – enter production. Some manufacturers, he notes, are already upgrading assembly specifications in response to negative customer feedback on ride performance.

Replicating OEM-level quality outside factory environments remains difficult. OEM assemblers must meet manufacturer-specific specifications that are neither public nor economically viable for most aftermarket operations. While some garage-machine suppliers now offer optional TU, run-out and matching functions, De Bruyne is blunt: accuracy, repeatability and production speed remain poor, and costs are high. Where large aftermarket organisations adopt industrial processes for volume reasons, conditions may resemble OEMs, but ‘the difference is the respect of process limits’, which are typically broader and not tied to a single vehicle programme.

Balancing tolerances illustrate the point. OEM plants may work to residual imbalances as low as two grammes, while many workshops accept eight to 15 grammes. Whether a driver notices depends on vehicle sensitivity, but the physics are unforgiving. “Imbalance vibrations can increase very fast when the speed is going up due to the exponential behaviour,” De Bruyne notes. Lower residual imbalance always reduces TU vibration risk.

Automation is transforming the assembly line, yet human expertise remains central. Practical assembler knowledge is increasingly embedded into software, statistical process controls, cameras, sensors and AI systems. “The key-knowledge is the teacher of such equipment and less the production operator on the line,” De Bruyne observes, underscoring a shift from manual skill to process intelligence.

Convincing OEM decision-makers to invest in this hidden discipline relies on data. Carmakers increasingly use market feedback tools, such as J.D. Power studies, tracking performance from delivery through the first year of ownership. This feedback drives Tier 1 suppliers to adjust processes in pursuit of customer satisfaction. Internal rejections between OEMs and wheel assemblers can also trigger upgrades, particularly when Tier 2 suppliers across global plants struggle with consistency. “Over the last 30 years, numerous additional optional processes have been introduced in the wheel assembly industry. While tyre shops may be aware of these processes, the high cost of the required equipment has often made it difficult to turn them into a viable business model,” De Bruyne concludes.

For an industry obsessed with powertrains, software and styling, tyre-wheel assembly may remain out of sight – but, as De Bruyne makes clear, it is increasingly central to how a vehicle feels, performs, and ultimately, how a brand is judged.

Comments (0)

ADD COMMENT

Link Copied!

ZC Rubber has received the Second Prize of China's State Science and Technology Progress Award for a project focused on high-performance tyre technologies and green intelligent manufacturing, developed jointly with Harbin Institute of Technology. The award recognises the project, titled Key Technologies and Green Intelligent Manufacturing of High-Performance Tires.

According to the company, ZC Rubber is the only Chinese tyre manufacturer to receive the State Science and Technology Progress Award at the Second Prize level or above during the past decade. The award is among China's highest state honours for scientific and technological innovation.

The company said the recognition reflects its investment in research and development and its efforts to integrate tyre development with intelligent manufacturing. In 2025, ZC Rubber invested RMB 1.54 billion in research and development, equivalent to 3.43 percent of annual revenue, according to its annual report.

The award recognises technologies that have moved beyond laboratory research into industrial application, linking high-performance tyre development with green and intelligent manufacturing processes.

Central to the company's research strategy are two proprietary technology platforms: the X-Tech System for truck and bus radial tyres and the Phecda Tech System for passenger car radial tyres. The platforms combine compound formulation, tyre structure design, process engineering, simulation, testing and intelligent manufacturing within a single development framework.

Rather than adapting an existing product architecture, the platforms define performance targets according to vehicle application, operating conditions and customer requirements before developing compounds, structures and manufacturing processes. ZC Rubber said this enables it to develop tyres for different duty cycles, climates, road conditions and regional requirements rather than using a standardised design.

Henry Shen, Senior Vice President of ZC Rubber, said: “Our objective is not simply to develop an individual material, tread pattern or manufacturing process. X-Tech and Phecda are complete development systems that connect user requirements with simulation, materials, tire engineering, manufacturing and validation. This award recognizes the direction we have pursued through sustained R&D investment.”

The company has applied the X-Tech and Phecda platforms across products developed for different regions. In Asia, the X-Tech System underpins the X-Elite truck tyre series. In Europe, it is used in the WESTLAKE Gen II commercial tyre range, while the Phecda Tech System supports passenger car tyres including the WESTLAKE ZuperAce Z-007 and GOODRIDE Solmax 1. Technologies from both platforms have also been applied across ARISUN's truck and passenger car tyre ranges in the Americas.

Shen said: “International markets do not have identical requirements. A tire developed for European highway fleets, Southeast Asian transport operations or passenger vehicles in the Americas must respond to different vehicles, roads, climates and customer priorities. Our technology platforms allow us to address those differences through a consistent and systematic development process.”

The company said the award-winning project incorporates green and intelligent manufacturing technologies intended to improve product consistency, production efficiency and energy performance. It added that the X-Tech and Phecda platforms will continue to support original equipment and replacement market product development across its WESTLAKE, GOODRIDE, ARISUN and other brands.

Comments (0)

ADD COMMENT

Link Copied!

The Indian Rubber Materials Research Institute (IRMRI) has officially announced the appointment of Professor (Dr) Abhijit Bandyopadhyay as its new Director. This decision marks a significant leadership transition for the institute, as it prepares to welcome a figure with extensive expertise in polymer science and rubber technology.

Professor Bandyopadhyay brings a distinguished academic and technical background to his new position. He currently serves as a full Professor in the Department of Polymer Science and Technology at the University of Calcutta and holds the role of Director, Technical at the South Asia Rubber and Polymers Park in West Bengal. His prior experience includes a tenure as Assistant Professor at the Rubber Technology Centre, IIT Kharagpur, and he has recently been appointed as a Technical Consultant for Rubber products at Berzelius Materials Performance Inc. in the United Kingdom.

Stepping into his new role, the new Director is expected to prioritise research advancement, indigenisation of technologies and sustainable development within the rubber sector. The IRMRI leadership and members have expressed confidence in his visionary guidance, anticipating that his leadership will drive the institute toward greater innovation and research excellence in the coming years.

Comments (0)

ADD COMMENT

Link Copied!

The Bureau of Indian Standards (BIS) has granted laboratory recognition to M/s D. Banerjee Centre of Excellence (DBCOE), based at the JSS Technical Institutions Campus in Mysuru, Karnataka, for a three-year period from 8 July 2026 to 7 July 2029.

The recognition, issued under the BIS Laboratory Recognition Scheme (LRS), enables the centre to undertake testing activities in accordance with BIS requirements. The laboratory's details have been uploaded to the BIS Laboratory Information Management System (LIMS), with sample receipt, testing and report generation to be managed through the online platform. The recognition remains subject to compliance with the provisions of the BIS LRS 2020.

Established by the Indian Institute of Rubber (IRI) in collaboration with JSS Technical Institutions, the centre is intended to strengthen industry-academia collaboration in polymer science and rubber technology while supporting research, testing, training and technology development for the tyre and wider rubber industry.

The facility has developed capabilities in material characterisation, wet chemistry and forensic failure analysis. Its laboratories can analyse raw materials including carbon black, rubber chemicals, elastomers, accelerators and antioxidants, while also supporting material specification development, plant audits and quality approvals. Plans are also in place to expand failure analysis services for manufacturers, particularly small and medium-sized enterprises (MSMEs).

DBCOE also aims to support manufacturers adapting to changing automotive requirements, including electric vehicles, through research into advanced materials and sustainable alternatives. Its stated focus includes bio-based materials, tyre recycling, steel reuse and low-emission polymers, alongside technical support for regulatory compliance and homologation.

Alongside its testing infrastructure, the centre has established a training ecosystem for the rubber sector. It offers two flagship programmes: a Diploma in Rubber Technology for diploma holders and new recruits, and a Postgraduate Diploma in Rubber Technology for science and engineering graduates. Both programmes combine online theory modules with practical training and laboratory sessions at the Mysuru campus, with final examinations conducted by IIT Kharagpur.

The centre is also developing a series of short-duration industry courses covering mixing, compounding, extrusion, calendering, tyre building, moulding, retreading, footwear, conveyor belts and latex products. These programmes combine classroom instruction with practical demonstrations, testing methodologies and failure analysis.

According to the centre, more than 40 industry experts contribute to its training programmes. Several tyre manufacturers, including Apollo Tyres, Yokohama, BKT and JK Tyre, recognise completion of the diploma programme as part of their employee development initiatives.

The centre primarily serves the tyre industry but also aims to support non-tyre rubber manufacturers, particularly MSMEs that lack access to advanced testing facilities and technical expertise. Through consultancy, training and laboratory services, it seeks to improve technical capability, product quality and compliance across the broader rubber sector.

Comments (0)

ADD COMMENT

Link Copied!

Elkem ASA, a global leader in advanced silicon-based materials, has announced the appointment of Dag Teigland as its new Chief Executive Officer, effective 3 August 2026. The board’s decision coincides with the departure of Helge Aasen, who will step down after leading the company since 2009 to take on the role of Chairman of the Board.

Bringing more than two decades of industrial and investment expertise, Teigland currently serves as executive chairman of Tekna Holding ASA, a firm known for advanced metal powders. His career includes senior executive positions at Tinfos AS and Holta Invest AS, where he managed an active investment platform. Previously, he held multiple leadership roles at Elkem from 1998 to 2002, culminating as Managing Director for the chrome business area, providing him with direct familiarity with the company’s operations.

Marianne E Johnsen, Interim Chair of the Board of Elkem, said, “The Board is pleased to appoint Dag Teigland as CEO of Elkem. He brings deep industrial expertise and a proven track record of driving development and transformation. With his background spanning both international industrial operations and investment environments, Dag is well suited to lead Elkem into its next phase of growth and development.

“At the same time, the Board would like to thank Helge Aasen for his strong leadership and significant contribution to Elkem over many years. During his tenure, Elkem has strengthened its strategic position, expanded its global footprint and developed world-leading positions in silicon, ferrosilicon, foundry alloys and carbon solutions. Helge has also led Elkem through major portfolio and financing measures, including the divestment of the Silicones division. We are very pleased that he will continue to contribute to the company’s development as chairperson of the board.”

Teigland said, “It is a great honour to return to Elkem and take on the role of chief executive officer. Elkem is a company with a strong industrial heritage and a leading position within its respective segments. I look forward to working with the Board, the Elkem leadership team and colleagues worldwide to build on this foundation, accelerate sustainable growth, advance safety and innovation and ensure that Elkem continues to supply the strategic materials needed for a cleaner, smarter and more resilient future.”

Aasen said, “It has been a privilege to lead Elkem as CEO over the past 17 years. I am proud of what the organisation has accomplished during this period and confident that the company is well positioned for long-term, sustainable value creation. I look forward to continuing to support Elkem in my new role as chairperson of the board and to work closely with Dag in the transition.”

Comments (0)

ADD COMMENT

Link Copied!