I have a set of 14x6 rally wheels that I picked up several years ago from an old body shop. These are GM wheels and are coded as. K 182 8 (valve stem hole) 30 XG. What does this mean? One still has the GM sticker on it. They are all black and appear to have never been on a car. I would like...

Open to selling them, too. Make me an offer if interested. Would rather trade thoughl Here's mine, 225/55/17 rear and 225/45/17 in front: I want something closer to this: So, basically I want higher profile and smaller rims. I'm particularly interested in Cragers. Do not want ralleys...