Some reclaimed tires get sold off for export. Not every country holds vehicular safety in as high regard. I deal with a used tire sales warehouse who routinely fills truck bodies for shipping and export to West Africa. He sells the best ones locally, those which pass state inspection, but that's just a tiny amount of what he receives. There are some "Tirez 4 Sale" guys around who do something similar, though without inspection, which is a pretty huge risk to take, since they are on the hook if those tires are the reason for an accident. He's mentioned that he's had people steal from his "fail" pile and he's taken to slicing a chunk out of the ones he downgrades (the ones that don't wind up going overseas).
I also once went (by accident) to a slideshow about one man's trip to Mongolia, where he noticed a large number of local vehicles were outfitted with Firestone tires, despite the decided lack of dealerships. He copied down several serial/production ID numbers from a few sets and, upon return to the US, found that they had been part of Ford's massive tire recalls from the early 2000's.
But realistically, very few tires ever see re-use; the markets just aren't that strong and with cheaper Chinese exports being shoehorned into so many developing economies, the demand for secondhand American materials just doesn't hold up. Some recyclers like BDS have found a way to use it as construction filler but, as many people on this forum have noted, investment in domestic infrastructure is not what it was in the 1940's. A few tires were being processed as chip rubber for playgrounds but as I understand it, there were health concerns. Most tires get ground up for tire-derived fuel (TDF) and burned wherever local regulation will allow. Ticonderoga Paper wanted to include it in their mill firings but the public outcry was enormous (understandable; we've been told for years burning tires is bad so why would industrial scale incineration be less harmful?), though I am unsure if the plant included scrubbers and catalytics in their externalization. One large TDF plant, which burns for energy recovery, operates on the Maine coast, where the supposed effect on human well-being is supposedly mitigated by virtue of the smoke rolling out over the uninhabited Atlantic Ocean. Much of what our facility takes in winds up there, as I understand it.
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