Schwalbe Inexperienced Marathon is a Recycled Tire Made out of Previous Bicycle Tires


Schwalbe has in the present day launched the Inexperienced Marathon bicycle tire, 70% of which is created from recycled and renewable supplies. On this daring transfer towards a round economic system, the model declare it’s the first bicycle tire that “closes the loop” – the recycled tire itself being recyclable on the finish of its usable life. As in comparison with its predecessor, manufacturing of the Inexperienced Marathon is claimed to require 34% much less CO2.

wolfgang reiche motobecane around the world touring bicycle
The Schwalbe Marathon has stood the check of time. Wolfgang Reiche’s Motobecane rolled on a number of prototypes of the Marathon over the course of his 73,000 km journey all over the world. His suggestions was key in serving to Schwalbe develop such a sturdy tire with dependable puncture safety.

In a state-of-the-art pyrolysis course of that takes place in Germany, Schwalbe is taking discarded tires – be they bicycle or automotive – and breaking them down into their constituent parts able to be reformed into new Inexperienced Marathon tires.

The recovered supplies are then shipped to Vietnam and Indonesia the place they’re used to supply the Inexperienced Marathon. Even with this additional step of transport, the general carbon footprint is diminished as in comparison with that of the outgoing Marathon.

The Inexperienced Marathon is at the moment the one Schwalbe tire produced on this method. Nevertheless, it being the model’s best-selling tire of all time, it appears a terrific place to begin in lowering affect on the surroundings.

And, they’re not stopping on the Marathon; Schwalbe plans to roll out this extra socially and environmentally accountable strategy to tire manufacturing to extra of its bicycle tires in future. For now, let’s take a better have a look at the Inexperienced Marathon, and the steps required to supply this first-of-its-kind recycled tire.

schwalbe green marathon
There’s a 34% CO2 saving related to manufacturing of the Inexperienced Marathon versus the outgoing mannequin. To find out that proportion, Schwalbe say an in depth Product Carbon Footprint (PCF) of each fashions was calculated and evaluated in keeping with the frequent IPCC AR6 commonplace (GWP 100, excl. biogenic CO2). Schwalbe will probably be publishing a doc that particulars this evaluation after EuroBike.

Schwalbe Inexperienced Marathon

Schwalbe Marathon followers will notice that the change to this greener manufacturing course of comes with a big tread sample replace. Whereas the outgoing Marathon noticed a slick middle tread cap, the Inexperienced Marathon is extra textured on this area, providing up extra edges to chew into softer terrain. Regardless of this, we’re advised the Inexperienced Marathon is in truth barely sooner rolling than its predecessor.

schwalbe green marathon tread pattern

The Schwalbe Inexperienced Marathon is meant for all kinds of bicycles, from touring bikes to city commuters and eBikes. With its launch, new sizes are added to the line-up, together with larger quantity choices which can be higher suited to eBikes.

schwalbe green marathon ebike tire recycled

So, what’s it product of?

Seventy-percent (by weight) of the Schwalbe Inexperienced Marathon is produced from recycled and renewable supplies. However, what does that actually imply?

Let’s break it down.

We first acquired wind of Schwalbe’s intention to supply a recycled tire again in March, after they introduced receipt of a provide of recycled carbon black (rCB) from their recycling companion, Pyrum Improvements AG. Carbon black is used as a pigment and reinforcing part in tire manufacturing, however its manufacture is environmentally damaging – it comes from the unfinished combustion of coal and coal tar. So, isolating this important part from previous tires is preferable, from an environmental standpoint, to persevering with its manufacturing from fossil fuels.

Schwalbe Recycling System rCB in transit
Large luggage of rCB collected from Pyrum Improvements AG, prepared for use within the manufacturing of the Schwalbe Inexperienced Marathon. The pyrolysis of rubber from previous tires takes place in Germany. The recovered merchandise – such because the rCB – are then shipped to Vietnam the place the Inexperienced Marathon is manufactured.

The Inexperienced Marathon’s new Addix ECO rubber compound is the primary manufacturing tire from Schwalbe to include the rCB from Pyrum Improvements AG – 100% of its carbon black is rCB.

The rubber itself consists of a mix of pure virgin rubber, in addition to recycled rubber, whereas the silica – an essential filler crucial for grip in moist situations – comes from rice husk ash. That latter facet doesn’t compete with meals manufacturing. We’re advised the rubber is 98% pollutant-free – what that 2% is, we’re but to be taught.

One third of the Inexperienced Marathon’s puncture safety belt, GreenGuard, is created from recycled latex merchandise, whereas the the opposite two thirds are Honest Rubber. Lastly, the bead core wire is product of recycled metal.

Regardless of use of such a big proportion of non-virgin rubber, the Schwalbe Inexperienced Marathon is claimed to be equal in efficiency and sturdiness to the not-so-green Marathon that it replaces.

cyclists riding schwalbe green maratjon eco friendly recycled bicycle tire
Up to now, Schwalbe has recycled round 400,000 tires thus far.

“The Inexperienced Marathon combines innovation and environmental friendliness on a brand new degree. It’s the results of years of analysis work that we’ve carried out along with our manufacturing companion Hung-A. We at Schwalbe are immensely proud to have the ability to current a mannequin on the fortieth anniversary of the favored Marathon that represents a milestone when it comes to ecological duty. And most significantly, the Inexperienced Marathon doesn’t compromise on efficiency in any method and continues to cleared the path in puncture safety and mileage”.

Frank Bohle, CEO of Ralf Bohle GmbH, the corporate behind Schwalbe

What in regards to the remaining 30%?

The remaining 30% of the Schwalbe Inexperienced Marathon tire is virgin materials, i.e. new rubber that doesn’t come from a recycled supply. To supply this in a socially accountable method, Schwalbe work with, a corporation that ensures the South East Asian communities working to reap the uncooked materials – latex – from the rubber timber, get extra money for his or her work.

Cash that comes from Schwalbe – an additional 0.50 € per kilo of pure rubber – is paid to the farming communities chargeable for harvesting the uncooked materials from rubber timber on the very starting of the provision chain. The cash doesn’t go straight into the pockets of people – slightly, it goes to group cooperatives that acceptable the funds as they see match – the constructing of latest faculties, for instance.

schwalbe green marathon recycled bicycle tire

“Taking duty is a pure a part of our enterprise. We’re a family-owned firm. We’re working throughout the biking business and, as most of us know, the bicycle promotes an environment friendly, wholesome and emission-free mobility. So, we predict it’s our job, our obligation, to make the bicycle as socially and environmentally accountable as doable. A few of these initiatives embrace the well-being of our staff and their households, the upper truthful working requirements in our provide chain. And naturally, a part of the explanation why we’re right here in the present day; merchandise which can be round and as eco-friendly as doable”.

Felix, head of the Company Social Accountability Staff at Schwalbe

Clearly, there’s a big quantity of data to be unpacked right here, significantly across the particulars of the recycling course of and the logistics of manufacturing. Total, this seems to be step in the precise route towards extra sustainable tire manufacturing, and we hope different tire manufacturers and producers will take notice.

As we head into EuroBike week, time is brief. We hope to deliver you a extra detailed clarification of the method, with a background to Schwalbe’s decision-making round this new eco-friendly strategy, in the end. For now, we go away you with a fast Q&A session that was held following the press convention.

Bikerumor: Can the Schwalbe Inexperienced Marathon be recycled on the finish of its life?

Schwalbe: Sure.

Bikerumor: What’s the restrict when it comes to the standard of the rubber you could produce from the recycling course of, when it comes to efficiency?

Schwalbe: Actually talking, the restrict proper now could be unknown. We’re in the course of analysis and improvement, and what we’re presenting in the present day is a tire that lasts simply so long as the previous Marathon, which is understood to final for hundreds and hundreds of kilometers. Within the background we’re additionally testing tires for different segments as nicely. Hopefully we can present you extra sooner or later.

Bikerumor: How are you controlling the consistency of the ultimate product, when there have to be such a big variation within the batches of recycled tires that you just obtain to start the method?

Schwalbe: That’s the nice problem once you use recycled supplies. With virgin supplies, you’ve gotten one enter and one constant output. With recycled supplies, we’ve many various various inputs, which might result in totally different outputs. So, we’ve qc on our aspect. We’ve got to say, our recycling companion, Pyrum Improvements, have performed loads of funding and improvement in displaying that we’ve one steady fixed output, in order that we don’t have any modifications in high quality in our output.

Bikerumor: Is there a lot waste alongside the way in which? Do it’s a must to discard a sure proportion of the tires you might be given to recycle as a result of they don’t meet a sure high quality, or does the whole lot go in?

Schwalbe: Some tires – like some spike tires, we at the moment can’t recycle. However that is additionally one thing that we’re engaged on proper now so that each one tires will be recycled.

Bikerumor: Is the ultimate rubber compound barely totally different in its properties to the compound on the outgoing Schwalbe Marathon?

Schwalbe: It’s almost the identical. There’s a slight distinction in rolling resistance, however it’s only barely higher. The sturdiness is similar. So we examined – that is fairly fascinating – greater than another product we’ve launched but. We examined it in follow after all, we examined it in our laboratory too.

We additionally made so-called section tires, the place we had the tread sample of the Inexperienced Marathon tire, with the compound of the previous Marathon on one half and the compound of the Inexperienced Marathon on the opposite half. Then we examined it on every day commuters for 40,000-50,000 kilometers – then we analysed the tire. So we are able to say efficiency clever, and the sturdiness of the tires, is kind of the identical because the previous one.

schwalbe marathon tire touring bike recycled rubber carbon black

Pricing & Availability

Value of the Inexperienced Marathon tire is equal to that of the outgoing mannequin; there isn’t any monetary penatly related to the change to a extra environmentally aware manufacturing technique – not less than not one that’s handed onto the buyer.

  • EUR: 30,90 €
  • UK: £30.99 GBP
  • US: $32.00 USD