Circular Economy for Tyres: Keeping Rubber in the Production Loop

Updated on: 3rd March 2026 By:

Why Tyres Are a Circular Economy Challenge

The circular economy concept is straightforward in principle: keep materials in productive use for as long as possible, extract maximum value from them, and recover and regenerate materials at end of life rather than disposing of them. Applied to most materials, glass, steel, aluminium, paper, the primary technical barrier is collection logistics and processing economics. The recycling pathway is chemically simple.

Tyres present a more fundamental technical challenge. The vulcanisation chemistry that makes tyre rubber perform effectively makes it impossible to recycle by the melting and reprocessing route available to thermoplastic materials. A tyre cannot be melted down and moulded into new tyre rubber the way a PET bottle can be melted and extruded into new PET. The cross-linked polymer network of vulcanised rubber resists the simple material recycling loop that characterises the circular economy for simpler materials.

This does not mean tyres cannot participate in a circular economy. It means the circular economy pathways for tyres are more technically demanding and more varied than for simpler materials. The pathways that exist, from retreading through to crumb rubber use in new products, from civil engineering baling through to recovered carbon black from pyrolysis, each contribute to keeping tyre-derived material in productive use. Understanding these pathways and the technical and commercial barriers to improving them is the foundation for a realistic assessment of where the tyre circular economy is today and where it is heading.

Gradeall International supports the tyre circular economy through the processing equipment that enables the highest-value end-of-life routes for used tyres. The MKII tyre baler, truck tyre sidewall cutter, and the full tyre recycling equipment range from Gradeall’s Dungannon, Northern Ireland facility are part of the infrastructure that makes circular tyre processing possible. With nearly 40 years of manufacturing experience and equipment in over 100 countries, Gradeall has supported the development of tyre recycling infrastructure across diverse markets.

The Hierarchy of Circular Tyre Pathways

The circular economy for tyres has a natural hierarchy that mirrors the waste management hierarchy: the routes that keep the most material value in the loop rank above those that recover only energy. Applying this hierarchy to each tyre type, routing every tyre to its highest viable circular pathway, is the goal of an effective tyre circular economy strategy.

Retreading: The highest circular pathway. Retreading is the closest the tyre industry comes to genuine circular product reuse. The casing, which represents the majority of the tyre’s material content and manufacturing energy, is retained and given a new productive life with fresh tread rubber. A truck tyre casing that supports three retreading cycles before end-of-life has provided four lives of service from one set of manufacturing inputs, dramatically reducing the per-kilometre material and energy intensity compared to using three new tyres for the same service.

The circular economy potential of retreading is limited by casing condition: only casings without internal damage can be retreaded. Fleet operators with structured tyre management programmes that prioritise casing preservation through correct inflation, load management, and regular inspection maximise their retreading yield. Damage from overloading, impact, or neglected cuts compromises casings that would otherwise be retreading candidates.

Civil engineering baling: Whole tyre reuse. PAS 108 civil engineering baling uses tyres in their whole form as a structural material, maintaining the integrity of the tyre’s complex engineered structure for a new productive purpose. The tyre bale’s service life in a civil engineering application is measured in decades; a bale in a road embankment or coastal protection structure provides sustained value from a material that would otherwise require processing.

Gradeall’s MKII tyre baler produces PAS 108-compliant bales that give car tyres their most complete second life before any material breakdown. At the end of the bale’s engineered service life, the rubber material can in principle be further processed through crumb rubber production, completing the cascade of uses before final energy recovery.

Crumb rubber in new products: Material retention. Crumb rubber production retains the rubber material from tyres in a form that can substitute for virgin rubber in a range of applications. The circular economy value of crumb rubber depends on how close the substitution comes to genuinely displacing virgin rubber production. In applications like rubber-modified asphalt and playground surfacing, crumb rubber replaces materials that would otherwise be virgin rubber or other virgin materials; the circular economy benefit is real.

The limitation is that crumb rubber, because it is vulcanised rubber, cannot be recycled in the same way again at end of life. A rubber playground tile made from crumb rubber cannot be recycled back into crumb rubber of comparable quality at end of life; it is typically a single-cycle material retention rather than the true loop of a circular economy ideal.

Devulcanisation: The closed-loop potential. The technology that would truly close the rubber loop is devulcanisation: breaking the sulphur cross-links that prevent recycled rubber from being reprocessed into new rubber compound. If devulcanised rubber can substitute for virgin rubber in new tyre manufacture, the carbon and material value of the original tyre would be retained through multiple product cycles rather than being progressively degraded through crumb rubber applications.

Devulcanisation research and development has accelerated in recent years, driven by the increasing commercial pressure to reduce virgin material content in new tyres. Several tyre manufacturers have announced programmes to incorporate recycled rubber content, and some have committed to specific recycled rubber inclusion targets. The technical barriers to high-quality devulcanised rubber at commercial scale remain challenging, but progress is being made.

Extended Producer Responsibility and Tyre Regulation

The EU’s End-of-Life Vehicles Directive and the developing UK Waste Regulations post-Brexit both reflect the principle that producers bear responsibility for the end-of-life management of their products. For tyres, this producer responsibility principle has historically been implemented through the Tyre Recovery Association and industry-funded collection schemes in the UK.

The direction of regulatory travel in the UK and EU is toward more explicit producer responsibility, with requirements for recycled material content in new tyres, extended producer registration and reporting, and increasing penalties for non-compliant disposal. The automotive industry’s commitments to circular economy targets under voluntary frameworks (ACEA, European Automobile Manufacturers Association) include tyre material sustainability commitments.

For UK tyre processors and tyre generators, this regulatory direction reinforces the commercial case for circular economy tyre management. Operations that can document their tyres going to high-value circular pathways (retreading, PAS 108 baling, crumb rubber in end products) are better positioned in a regulatory environment that increasingly measures and rewards circular performance.

Innovation in Tyre Design for Circularity

The circular economy for tyres is not only about what happens at end of life; it begins with tyre design. Several innovations in tyre design and manufacture aim to improve circularity from the outset:

Reduced tyre compound complexity. Tyres with simpler compound formulations, using fewer chemical additives, are easier to recycle at end of life. Some tyre manufacturers are developing compound formulations that maintain performance while improving recyclability.

Bio-based rubber content. Increasing the proportion of natural rubber and bio-based synthetic rubber in tyre compounds improves the biogenic carbon fraction of TDF applications and potentially improves the properties of devulcanised rubber from these tyres.

Design for retreading. Casing designs that specifically optimise for multiple retreading cycles, rather than treating retreading as an afterthought, maximise the lifetime value extracted from the material and manufacturing investment.

Digital tyre tracking. Digital identifiers embedded in or applied to tyres that track their history through production, service, and end-of-life enable more efficient routing to the appropriate circular pathway. A tyre with a known service history can be better assessed for retreading viability or optimal recycling route than one without documentation.

The Role of Tyre Processors in the Circular Economy

Tyre processors, the businesses that collect used tyres and direct them to their end-of-life routes, are the operational centre of the tyre circular economy. The quality of their decision-making about which tyre goes to which route, and the quality of their processing equipment, determines whether the circular economy potential of each tyre is realised.

A processor that routes every car tyre to TDF regardless of retreading or baling potential is leaving circular economy value unrealised. A processor with well-maintained Gradeall sidewall cutting and baling equipment, clear tyre sorting procedures, and established relationships with retreaders, civil engineering bale buyers, and crumb rubber producers is extracting the maximum circular economy value from each tyre type.

The circular economy for tyres is not a theoretical concept; it is the business model of every tyre processor that directs tyres to their highest-value route,” says Conor Murphy, Director of Gradeall International. “Our equipment is part of making that routing possible. The MKII baler produces PAS 108 bales that give car tyres a 30-year second life. The sidewall cutter prepares truck tyres for the retreading or crumb rubber route. Every piece of equipment in the chain contributes to keeping rubber in productive use.”

Contact Gradeall International for tyre processing equipment that supports circular economy tyre management across all tyre types and end-of-life routes.

Frequently Asked Questions

How much recycled rubber content do new tyres currently contain?

Tyre manufacturers vary in their current recycled rubber content. Most new tyre compounds contain a modest percentage of recovered carbon black or recycled rubber material. Several major tyre manufacturers have announced targets for increasing recycled content over the next decade, driven by regulatory requirements and sustainability commitments. Exact current recycled content is manufacturer-specific and product-specific.

What is the carbon footprint of a new tyre and how does retreading compare?

A passenger car tyre’s manufacturing carbon footprint is approximately 30 to 40 kg CO2e (this varies with compound specification and manufacturing location). A retreaded tyre using an existing sound casing has a significantly lower footprint because the casing production, which represents the majority of the manufacturing carbon, is not repeated. The precise saving depends on the specific casing and retread process, but typical estimates show retreading reducing per-tyre carbon footprint by 60 to 75 percent compared to a new tyre.

Does the circular economy for tyres include collection infrastructure?

Yes. The tyre circular economy requires an efficient collection system to return used tyres from dispersed generation points (tyre retail, fleet maintenance, farms, quarries) to central processing. The collection logistics, including licensed waste carrier networks and the economics of tyre collection pricing, are a significant enabler or barrier to circular performance. Collection infrastructure investment is necessary alongside processing investment to realise the circular economy potential of the UK’s used tyre stream.