Nope, haven't taken them off- one of the guys on NASIOC ID'd it as a Primax wheel, and with GIS I find it's a Primax 618, 16 x 7, and I get to hunt for the offset now.
The lugs are apparently special and came with the wheels- the red valve stem caps are rather special too
. Now that you mention it, I do think those are the stake nut caps painted red. Just one more thing to take care of- I got most of the fake CF stickers removed from the car.