I just installed 20X10 Axis mod Se7en's with a 275 tire and Tien S-Tech spings and its a perfect fit with NO rubbing, and I also have a 2 10" sub setup in my trunk. Sounds like maybe your off-set is slightly off. I have heard some negaive things about rolling your fenders as well.

 

i have a similar problem to some of you guys.... my rear is sitting noticeably lower than my front (it was doing this even before i upgraded to 19's). i think it's due to the subwoofers i have in my trunk. i am not getting any contact with the body from the rear tires, so i'm not worried, it just looks funny (even my friends with absolutely no knowledge of cars have said that my rear looks like it's sagging)

the bigger problem i see is the negative camber i have in the back, which, again, was present before i upgraded my wheels. perhaps i should remove the subs for a while and see if it helps?

my wheels.... Lexion (by Rays) Type 203 Triple Chrome 19x8 front / 19x10 rear