Took a few pics of the car with its new shoes on. Had them on there about a month now, and I've grown to really like them - the low offset made me a bit wary at first, but now I actually like the way they sit, gives the car a nice wide stance.
If my mind isn't messing around at the mo, those are genuine BBS wheels, but not "built" for the E30.
Those are the pre-15" officials. It's to say, one of the first generation 15" crossspokes, after the 14". Therefore the bigger ring. Take a genuine 14" BBS crossspoke and you'll notice that they just have a ring around them to get the 15".
They're 16" wheels - they do have a mark/logo on the inside, but it's not BBS. Also, they're stamped "made in belgium". Apparently, they're the perfect offset for an E21, so i suppose they might have originally been on one of them.