If you're into the whole hellaflush thing then go for it. I've done a 18x10 +15 255/40 in the fronts. Switched to a meatier 19x10 +30 275/35 now. Roll the front fenders, shave off that bumper tab, throw some negative camber (mine was -2.2 last time I checked) into the mix and ride on!
Disclaimer: It also depends on your ride height too, forgot to mention that.