WTF are you guys talking about...no one is going to notice a difference in wheel width of only 1 inch. if the diameter on both ends is 19" no ones going to see that they are 8.5 in front and 9.5 in back. its almost impossible to look at the widths of both the front and rear wheels at the same time. the only reason you shouldnt do this is that if your camber settings are different in the front, which they probably are, you cant rotate your tires. (or wouldnt want to)

1995 Eclipse GS - HRC Stage 2 - Retired.
2004 350z Enthusiast / 2008 Nissan Versa SL