Although plastic particles in the air are increasingly coming into focus, knowledge about their distribution and effects is still limited. Chemical analyses from Leipzig now provide details from Germany for the first time: Around 4% of the particulate matter consists of plastic. Around two-thirds of this comes from tire abrasion.
Yeah, there was a video a little while back that said that one of the only real sets of tyres that are pure rubber these days are plane tyres because of the huge strain put on them as soon as touchdown is made.