You'll be fine. High offset is the key here.
Gotta watch the suspension though! If you're not running coilovers a 45mm offset wheel might rub on the suspension!! Bernie and Antonio are on coilovers which give more room to push the wheels inside.
My 18"x7.5" wheels had 43mm offset, and I was tucking tire at all four corners without rubbing and without rolling the fenders either.. That was 225 tire too!
Antonio, don't cut the fender lips, get them rolled up. Find a place that has the real rig to do it, the one that bolts up in place of your wheel. With a heat gun and some patience they should be able to save your paint as well. If you cut them you're reducing strenght.. there's welds along there, and you don't want to weaken them.
