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.

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Epsilon Carbon Pvt. Ltd. has announced the appointment of Munish Kumar Rathi as its new President and Business Head for Carbon Black.

With more than 25 years of extensive global leadership experience, Rathi brings a strong background in profit and loss management, multi-site manufacturing leadership, strategic planning and business transformation. His career is marked by a demonstrated ability to drive operational excellence and foster sustainable growth across various international markets.

The company is anticipating that his leadership will play a key role as Epsilon Carbon continues to expand its global footprint and accelerate innovation within the carbon black business segment. The organisation has formally welcomed Rathi to the team, expressing confidence in his capacity to guide future strategic initiatives. This move underscores Epsilon Carbon’s commitment to strengthening its leadership team in pursuit of long-term global competitiveness.

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TVS Srichakra has approved capital investment of up to INR 2.2 billion to expand production capacity at its manufacturing facilities in Vellaripatti, Madurai.

The expansion will cover the company’s two-wheeler tyre and off-highway tyre plants, with investment of up to INR 1.1 billion allocated to each facility.

TVS Srichakra said the two-wheeler tyre plant currently has capacity of about 21 million to 23.5  million tyres a year and operates at utilisation levels of around 80 to 85 percent. The company plans to add about 5 percent capacity, with completion targeted in the first half of FY2028-29.

The off-highway tyre plant has existing capacity of about 75 to 85 metric tonnes a year and operates at utilisation levels of 75 to 80 percent. TVS Srichakra plans to increase capacity at the plant by about 25 percent, with the addition scheduled for the first half of FY2027-28.

The company said the investment would be financed through a combination of internal accruals and debt.

TVS Srichakra said the expansion is intended to meet growing demand for its two- and three-wheeler tyres and off-highway tyre products.

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JK Tyre & Industries reported record consolidated revenue of INR 163.84 billion for FY26, registering an 11 percent year-on-year increase, supported by strong domestic demand and volume growth across key tyre segments.

The company’s consolidated EBITDA rose 25 percent to INR 20.89 billion, with EBITDA margin improving to 12.8 percent.

Profit before tax increased 46 percent to INR 10.43 billion, while profit after tax climbed 52 percent to INR 8.60 billion during FY26.

For the fourth quarter, consolidated revenue rose 12 percent year-on-year to INR 42.33 billion.

Quarterly EBITDA surged 42 percent to INR 5.46 billion, with margin at 12.9 percent, while Q4 PAT nearly doubled, rising 94 percent to INR 1.99 billion.

Chairman and Managing Director Dr Raghupati Singhania described FY26 as a year of robust performance, highlighting record volumes in both truck and bus radial and passenger car radial categories.

Domestic sales volumes during Q4 grew 21 percent overall. Truck and bus radial replacement volumes increased 53 per cent, while OEM demand in the segment rose 23 percent. Passenger car radial replacement volumes were up 26 percent and OEM demand increased 10 percent.

The company said growth momentum was expected to continue into FY27, supported by new vehicle launches, infrastructure development and sustained replacement demand.

JK Tyre also highlighted strong traction in electric mobility. More than 70 per cent of electric buses operating in India currently run on its tyres, while the company supplies EV tyres to nearly eight two-wheeler OEMs and has secured orders for electric passenger vehicle models including Renault Duster EV, Hyundai Creta EV and Tata Motors’ Nexon and Punch EV variants.

Its Mexico business, operated through JK Tornel, contributed nearly 20 per cent of consolidated revenue and is expected to maintain growth across Mexican, Latin American and US markets.

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The U.S. Tire Manufacturers Association (USTMA) has elected David Cichocki, Managing Director, Americas, and chief sales officer, Americas Consumer, at The Goodyear Tire & Rubber Company, to its board of directors.

“I’m pleased to welcome David to our Board. His extensive experience and expertise across the tire and consumer goods industries will be invaluable as we navigate today’s complex industry,” said Anne Forristall Luke, USTMA president and chief executive. “His proven leadership will strengthen our ability to seize emerging opportunities.”

Cichocki joined Goodyear in early 2026 and is responsible for overseeing the Americas region and leading the company’s Americas Consumer sales business.

He brings more than 30 years of leadership experience across industrial and consumer goods companies to the USTMA board.

Before joining Goodyear, Cichocki served as senior vice-president of US sales at Whirlpool, where he managed a portfolio valued at more than $10bn across retail and direct-to-consumer channels.

He also spent more than 20 years at Kraft Foods and Nabisco in a range of senior leadership roles.

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