I have 20 rims with tires (6 lugs). They also have spinners. Where could I sell them?
You can also put them on eBay
My partner owns a tyre service and he will sell second hand tyres but will not buy them. (Tyre shops rarely buy second hand tyres because once they put new tyres on a car they generally keep the old ones.) I think your best bet is to sell them on Ebay or advertise in your local paper. That way you can put in your asking price and will probably get a lot more for them than you would by selling them to a shop any way.