The French group carried out a study on tire particles using the analysis process, which it said has been made available to the European Tire & Rubber Manufacturers' Association. The study made it possible "to better quantify the number of particles which contribute to atmospheric pollution," Michelin said.
These included fine particles, or particle matters with the diameters of between 10 µm and 2.5 µm (PM10 and PM2.5). Figures that Michelin said, "have never been verified with such precise experimental measurements until today."
The first results of the study showed that among the particles emitted by a tire, on average 1.3 percent are PM10 and 0.16 percent are PM2.5 and are likely to be found suspended in the air.
For Michelin, such precise quantification is important to increase its understanding of the links between the tire, the road and driving behavior.
Further afield, it said, official organizations can use the data to estimate urban pollution and develop air-quality measurement simulation models.
With the technology made available to ETRMA, the trade body will carry out "a larger-scale measurement campaign with the help of an independent organization," Michelin added.
The study will be launched in 2024 for a duration of approximately 18 months.
Michelin said its approach will be complementary to the Euro7 vehicle emissions standard, which was adopted by the European Parliament earlier this month.
The set of standards aims to make it possible to define regulatory thresholds for tire abrasion to reduce the quantities of particles emitted in Europe.
The regulation will be based on a recent test method introduce by the UNECE, based on which tire weight loss due to abrasion will be expressed in milligrams per kilometer per metric ton of load on the tire.
