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The Real Carbon Footprint of a Retread vs. a New Tire: What the LCA Data Shows

Waste diversion and fuel savings are one part of the sustainability case for retreading. Formal life-cycle assessments measure a different, harder number: how much CO2 it actually takes to make the tire in the first place.

Published September 10, 2026 · Good Hope Retreaders

We've written before about the circular-economy case for retreading (fewer scrap casings, less new rubber consumed) and about EPA SmartWay's fuel-savings requirements for verified retreads on the road. There's a third environmental question, separate from both of those: how much carbon does it actually take to manufacture a retreaded tire compared to a new one? That's what a Life Cycle Assessment (LCA) is built to answer, and a handful of real studies have done the math.

What an LCA actually measures

A life-cycle assessment done properly follows the ISO 14040 and ISO 14044 standards: it tallies the material inputs, energy use, and resulting emissions across a product's life, usually reported as kilograms of CO2-equivalent (the Global Warming Potential, or GWP, metric). For tires specifically, there's a dedicated Product Category Rule (PCR, UL10006) under ISO 14025 that standardizes how a tire LCA should be scoped, so results from different studies can be compared on roughly the same terms.

The 2009 study: 30% lower for a light commercial tire

One of the earlier independent studies was commissioned by the UK's Centre for Remanufacturing and Reuse and carried out by carbon-footprint specialists Best Foot Forward. Testing a 17.5-inch light commercial vehicle tire, the study found that manufacturing a new tire produced 86.9 kg of CO2, compared to 60.5 kg of CO2 for an equivalent retreaded tire — a 30% reduction, reported at the time by Tyrepress and Tire Review Magazine. It's an older data point and scoped to a light-commercial tire specifically, not a truck tire, but it was one of the first attempts to put an actual number on the difference rather than argue it qualitatively.

The 2024 study: 74% lower for a truck tire

A more recent and more rigorous LCA came from Marangoni, working with the Department of Industrial Engineering at the University of Trento. It followed ISO 14040/14044 and the tire PCR noted above, using SimaPro (version 9.4) to run the calculation, and compared a retreaded 385/65R22.5 truck tire against a new tire of the same size. Coverage in Tyrepress, Retreading Business, and Aggregates Business reported the result: 74% lower CO2 emissions and 77% lower resource consumption for the retread, with the retreaded tire coming out ahead of the new tire across all eleven environmental impact categories the study examined.

Worth flagging honestly: this is a manufacturer-run LCA of one specific retread product line (Marangoni's Ringtread), not a generic industry-wide average, and the study explicitly assumed the retread matched the new tire's rolling resistance and mileage — a "cautious" assumption the researchers note is backed by their own measurements, but an assumption nonetheless. Read it as a strong, methodologically serious data point for what a well-built retread can achieve, not as a universal number for every retread everywhere.

Why the casing does the heavy lifting

The physical reason both studies land in the same direction comes down to what a retread actually reuses. Reporting from Scrap Tire News on the circular-economy side of retreading notes that the casing represents roughly 75% of a commercial truck tire's total mass — and an even higher share of its embodied energy and carbon, since the casing's steel belts and structural rubber are the most energy-intensive parts of the tire to produce. Retreading reuses exactly that component. It's the same reason retreading saves money on a per-tire basis and the same reason it saves carbon: the most expensive part of the tire to build, in both dollars and emissions, is the part that doesn't get rebuilt.

What this means for a fleet's numbers

Neither study is a promise that swapping to retreads cuts a fleet's total emissions by 30-74% — tire manufacturing is one input among many in a fleet's footprint, and fuel burned over the tire's life (the subject of the SmartWay program) is a separate and typically larger factor. But for any fleet reporting on Scope 3 emissions or responding to a shipper's sustainability questionnaire, tire manufacturing footprint is an increasingly common line item, and it's one where the retreading data is now specific enough to cite rather than gesture at.

Combined with the cost case for running retreading in-house, the carbon data adds another line to the argument for treating retreading as core fleet infrastructure rather than an occasional cost-saving measure.

Building the case, and the shop, to back it

If the sustainability and cost numbers make the case for running more of your fleet's retreading in-house, we supply the machinery, consumables, components, and repair tools to equip that line — manufacturer-direct, with transparent all-in Canadian pricing and local Ontario service.

Talk to us about your retread line →