2 or 3 times a year the city has some kind of collection for all kinds of stuff.
Earth day they have a few sites set up for everything...donated, trash, appliances,paint, tires electronics and more. There is a limit to the number of tires per address. Pretty easy to get rid of a lot with family all local. Some stuff you even get money towards your utilities like appliances, window a/c.
Usually is another one for just tires organized by the county mosquito control. Family business is rentals and a lot of move out/ evictions leave tires behind so we just store them until there is a free collection. Gas cans.....always gas cans left behind too
They do have to be rimless, so any with rims get put on Craigslist for free, and I doubt they do the responsible thing with the tires after they get the rim offs for scrap metal.