(1) Source: https://ourworldindata.org/co2-emissions-from-transport
(2) From the extraction of raw materials, to manufacturing, logistics, use and collection and recycling
(3) Source: Michelin Total Cost of Ownership Split study conducted by Ducker Carlisle in 2024, based on average of costs reported by fleet customers during phone interviews.
(4) Source: UK Government GHG Conversion Factors for Company Reporting, 2024
(5) Renewable materials obtained from natural resources that can be reconstituted over a short period of time on a human scale, and recycled materials obtained by any recovery operation whereby industrial or post consumer waste is reprocessed into products, materials or substances
(6) Michelin Internal study performed in 2022 by Competitiveness analysis tool performed on Europe perimeter comparing MICHELIN brand new tyre vs. MICHELIN Remix®.
(7) The CO2 saving associated with the retreading operation is calculated from the associated material saving. In terms of material saving, a MICHELIN Remix® retreaded tyre covers up to 100% of the mileage of a new MICHELIN tyre (the tread mix and tread pattern of MICHELIN Remix® tyres are largely the same as those for new MICHELIN tyres; 90% of tyres in the MICHELIN Remix® range are made from the same mould and the same materials as new MICHELIN tyres and therefore perform equally as well; according to internal tests conducted by the Michelin Research and Technology centre and customer testimonials collected in Europe since 2015). A new tyre weighs 70 kg on average. A tyre ready to be retreaded weighs 50 kg on average. The CO2 impact of a retreaded tyre is linked to the material saving, or 115 kg of CO2 representing 50 kg of raw material savings, at a rate of 2.3 kg of CO2* per kg of raw materials.
* Equivalence between CO2 and a litre of fuel or kilogram of raw material is calculated in this way: the emissions factor of 3.24 kg of CO2 for 1 litre of diesel comes from the life cycle assessment conducted by ADEME for pure diesel. It includes emissions during the diesel production stages (17%) and during its combustion (83%). Source: ADEME, Study «Well to wheel - JEC», v4, july 2014. The emissions factor of 2.3 kg of CO2 for 1 kg of tyre comes from the life cycle assessment calculations for production of a tyre cradle to gate), conducted internally by Michelin using the calculation rules developed by the tyre manufacturing profession (TIP). It includes stages including extraction of raw materials, transportation, manufacturing, and distribution. Source: UL Environment Standard, «Product Category Rules for preparing an Environmental Product Declaration for the product category: Tyres», v3.05, february 2022.
(8) Compared to a worn non-regrooved MICHELIN tyre. Based on a 4-mm average regrooving. Information taken from recommendations made by the French tyre manufacturers’ federation TNPF in 2013 according to which regrooving of worn tyres increases tyre lifetime by using all available rubber.
(9) Internal study carried out at the Michelin test tracks in Ladoux (France) on 5 May 2021, under DEKRA supervision (report No. 21CPAEXT-030). For the comparison between new tyres and regrooved tyres (R5 mm), two identical Volvo FH500 trucks were used, fitted with 315/70 R 22.5 MICHELIN X® LINE ENERGY™ Z2 & D2 tyres and each towing a fully loaded (40 tonnes) Schmitz Cargobull trailer fitted with 385/55 R 22.5 MICHELIN X® LINE ENERGY™ T tyres at identical pressures (8.5 b, 7.5 b and 9.0 b). Results may vary depending on weather conditions, road type, tyre size and driving style.
(10) The CO2 savings from the Michelin multi-life model, are accentuated thanks to the fuel savings linked to regrooving (up to 5.4%(1)). According to a study under real conditions of use (using 315/70 R 22.5 tyres fitted to the drive and steering axles of a 4x2 truck used for international and national long distance, that have exceeded 50% wear), the average mileage for MICHELIN X® LINE ENERGY™ Z2 and MICHELIN X® LINE ENERGY™ D2 tyres is 232,200 km before regrooving* (*Michelin internal source and calculation, based on measurements taken by the Michelin teams during customer inspections on 488 axles, in Austria, Belgium, Croatia, the Czech Republic, France, Germany, Greece, Hungary, Italy, the Netherlands, Poland, Portugal, Romania, Serbia, Slovenia, Spain, and Turkey, over the period from 2020 to 2023), with a simulation based on the results collected suggesting extrapolation of the lifespan until 3 mm remains. The results may vary depending on the weather and road conditions. The view is that our tyres travel up to 25% (2) further thanks to regrooving, i.e. 58,050 km (232,200 x 25%). The fuel savings are calculated over the distance travelled by the regrooved tyres (58,050 km) at an average consumption of 29.5 L/100 km for new tyres and 27.91 L/100 km for regrooved tyres (source: DEKRA report No. 21CPAEXT-030). 29.5 x 5.4%, i.e., a saving of 1.59 L/100 km for an articulated truck and tri-axle trailer (thus 12 tyres). Consequently, there is a saving of 0.13 L/100 km per tyre (1.59 L/12), i.e., 0.13 L x 58,050 km/100 = 77 litres of fuel saved when driving on regrooved tyres, thus a saving of 77 litres of diesel x 3.24 kg of CO2 = 251 kg of CO2. The emissions factor of 3.24 kg of CO2 for 1 litre of diesel comes from the life cycle assessment conducted by ADEME for pure diesel. It includes emissions during the diesel production stages (17%) and during its combustion (83%). Source: ADEME. Base Empreinte, Étude Carbone, Version 22.0.0, 02/08/2022. Thus 77 x 3.24 kg of CO2 = 251 kg of CO2.


