Tire dust has the magic property of being something you can’t see. In other words, the left can magnify it and make it sound like an invisible monster that not even our lying eyes can properly educate us on.
Tire dust is a real thing. Long story how I know this, but we measured it with a particulate counter that would measure how many particles per cu.ft. there were by size range down to the sub micron level. We were doing some indoor air quality consulting work. And yes, samples near a major 5 lane 1-way urban artery measured significantly higher particulate counts. Some of it was tire wear particles, some of it was diesel exhaust.
Now, do I think this is the major environmental issue I’m sure the EPA will be trumpeting? Doubt it. I’m from Missouri for the moment - SHOW ME!