OE BMW Wheel Gurus?

[Nimble]

I'm looking at a local ad for these 15" BMW factory wheels. He says they came off of a 6 series from the 80's, but I cannot find them on a 6 series car. He says the wheel hub specs them as BMW IS20, 75x15 H2, so I'm guessing they are 5x120 ET 20 and 7.5" wide? Will these fit a E30?

[Mastrcruse]

I don't know about where they came from but e30's take 4x100's unless you have an M3 suspension/car or you purchase one of the conversion plates from the fs thread that I saw a couple days ago.

[Stu]

Those look like E32 740i wheels, but I can't confirm that.

They are 5-lug and most likely similar offset to E34.