I'm trying to discover whether 6PPD is used in making bike tyres. Considering what it improves, one would assume yes? I find this page curious in that it discusses a toxic substance from tyres, then at the bottom is a link advertising how they carpet the ground under childrens play structures with... ground up car tyres... For now I'll avoid squeezing my bike tyres and wash hands whenever it becomes necessary... https://tsbc.ca/6ppd-in-tires-what-we-know-so-far/ #6PPD #6PPD-Q #recycling