Thanks everyone.
X5Jay,
All I can say about the tires is: Holy Sh*t! The grip compared to the all-seasons that came with the X3 is night and day. It might just be me and the "feel" but my X3 feels a tad quicker due to the grip.
I am getting some BMW centercaps. I've also ordered some black/white BMW logo stickers, I may use them as well.
And finally, yes the entire inside of the wheel is black.