The UK creates 700,000 tonnes of scrap tyres each year and 350,000 tonnes go to India for recycling - supposedly. That's one huge fleet of freighters burning the dirtiest fuel, bunker fuel, on a 20,000 mile round trip - a CO2 nightmare.
Once in India the tyres are slowly "cooked" in coal fired ovens, more CO2, to extract the steel and some oil as well as carbon black. That is reused in many other processes such as plastics, but it is almost impossible to recycle. The ovens also produce soot and noxious gasses
These unregulated ovens are often in rural backwaters, out of sight and out of mind, and the health of locals is suffering: some have died.
I would love to know how all this squares with our net-zero fantasy. All this CO2 and other crap is UK crap, but because we export it it is not included in the figures.