Where I live, when we buy new tires, we have to pay a 'disposal fee'. You pay the fee whether you take the tire home or leave it. I just leave mine, let them deal with it.
That's what I do.
Same here. When I was farming full time, I always saved tires, thinking I could find a use for them. Ended up with a farm full of used tires. Not good. Now, I let someone else deal with them. Our county highway garage will take old tires for a few days out of each years, just to help people get rid of them.