The only reasons I can think of why your wheels would change is...
A) If you used a non-stock tire size that was so different, the rim had to be changed to mount the tire safely.
B) Changing the hubs meant changing out the entire axle and it is longer/shorter than the stock axle (of course, at that point, I think changing out to different wheels would be the least of your problems).
...so to answer your question directly, not necessarily.
Dean