I got my new wheels today, so I took them up and had my new tires mounted. The wheels are e34 M5 "M System" wheels in 17x8 et20. The tires are 225/40ZR-17 Nitto NT 555.
I was not sure how this was all going to fit, but it seems perfect. I get a little rubbing on the inside rear of the front fender well, when I have the wheel turned all the way. Since it is just plastic, I may see if I can push it back a tiny bit. It looks like I will not need to roll the fenders unless I bring the front height way down.
I will eventually have the silver lip polished, but I think it looks nice the way it is.
Anyway, here are some pics. Let me know what you think! Click on the pic for a higher res version.