Are they on craigslist? My guess is that most people on a 4x4 forum want aggressive and oversized tires... Craigslist you could probably sell them to some soccer mom or businessman in a 4 door jk! Also you might try listing the tires in their own add, then mention that they can be separated?? If you do separate them, it would appeal to a broader audience. And worst case scenario, you could scrap the aluminum for I think around 120 bucks, depending where you go.
My ride- 2001 power wheel, 11" plastic tires, upgraded battery, boat sides, custom bumpers, tow hooks, new paint.