Yes, the spacers really improve the looks with an 8.5" wheel setup. (Especially in your case, with the rear fender flares!)
I recommend the 30mm spacers in the rear, and 15mm spacers in front.
I started with just the rear spacers, and I found that they made the rear of the X feel a little more planted - which was nice. But I also felt a little loss of turn-in agility (detracting from the fantastic benefit of my camber plates) so I went with the 15mm spacers up front to balance things back out. :thumbup:

Here's a pic with the 30mm rears... (I hadn't installed the 15mm fronts yet) :

http://arobacker.smugmug.com/photos/40689828-M.jpg

I snowboarded Thanksgiving weekend at Windham, NY... it was great, especially since the lift tickets were $12.50 and it wasn't crowded.

I was able to snowboard at Killington, VT before Halloween... it was crazy with lots of powder!!! I'll be going a bus trip this weekend to Stratton... But the big one for me will be at Mammoth in April/May!! :thumbup:

Thanks for the Advice, Aaron!!

I just can't wait to put the 20"s back on and, some H&R springs!!!

:D You could say that's dirty Bimmer :D