Well, I know this first hand. I bought a set of rims from a S4 to put on my 2002 SS and the hub was a 1/4" too wide. I tried swaping the bearing and a whole mess of other stuff to get that guy to fit. I finally popped the bearings out of my stock wheel and measured them through the axle. Sure enough they were of by a 1/4". Even the bearings were a different width.

I didnt know that the new 1000ds have the 25mm rear. I dont know if that changes anything or not.