I'm not sure what your concern is about the K02s, but these already mounted were less than I could buy the wheels for anywhere else, bought from a guy that couldn't fit them over the brakes on his Cayenne. They're 17" wheels, which seem to be the best OEM Touareg wheel for offroad use for models with brakes small enough (e.g. not the V10). I don't like how the K02s sound or drive on pavement, but I usually swap out for street wheels and tires between offroad trips.
Thanks, I can get a piece of angle iron welded to my spare tire carrier, and will mount it to the fixed base, so it doesn't need to add any weight to the swing.