I think you mean these.
Yup, I cheaped out. It's a plain old driver. I went with 8x17 all the way around so I could rotate front to rear. They make 9.5" for the rear if you want them but BEWARE, they may not be dished as expected and have the same narrow lip as the front. I never saw the 9.5" rim so I can't tell one way or the other.
The wheels are machined for E39 so you will need hubcentric rings. My tire store supplied them but I still ordered the aluminum set from Tirerack anyway for future use.
The tire size I am using is 235/45-17.
The combo works great for daily driving and looks better than the 15" baskets, at least to me. If I crunch one in a pothole I won't be out big bucks either.
In the future, possibly on my Touring, I will go for accurate reproduction wheels like the ones shown on this 525iT instead of the "imitation" wheels on my sedan.
DJ