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[California Air Resources] Brake & Tire Wear Emissions
[NIH] Secondary particulate matter in the United States
so much, as you mention, is focused on the exhaust emissions, while ignoring the knock-on, indirect, and delayed effects
a couple more additions
If we account to impacts on wildlife as well, there's displacement of species, stressors to local fauna, and the innumerable roadkills as well
You occasionally see studies that include mention cost of manufacture - For instance Cuba technically has lower car emissions mainly because the embargo has forced them to constantly repair cars rather than get new ones. Not aware of any mention of the other facts like maintenance and city planning though, would be cool to see more data about it if it exists.
Re city planning:
The youtube channel Not Just Bikes has a lot to say about car-centric design, but isn't as data heavy as I'm looking for. They also have a series on the organization Strong Towns, whom does have more data in their critiques of car-centric city planning, but they spread everything out across half a day's worth of videos and recorded talks, and even more in podcasts and books and an online "academy."
I've read a few articles about the rubber from tires being one of the worst aspects of car pollution
I don't know if there's any gasoline car vs electric studies, but there's been some research into, for example, carbon footprint of oil drilling vs lithium mining. Here's one of the articles that has a bunch of sources sited:
10% of a person's carbon emissions is still more than anybody's carbon footprint in the developing world. Every little bit helps and cars are the one source of carbon emissions that actually has some semblance of personal responsibility.
That and diet.
I probably shouldn't have framed the question as "in order to refute the 'only 10%' argument," it's also out of curiosity and accuracy. Anyone who resorts to "only X%" isn't arguing in good faith and won't settle for anything that's not the silver bullet that solves climate change entirely