Assuming everything else is stock, I wouldn't attempt to go any wider than a 225, the low offset just doesn't allow any more. With suspension bottomed out, I'm barely clearing with rolled rear fenders. And when driving with the wheels turned on an uneven surface (entering/exiting driveways) I still encounter some minor rubbing on the plastic liner on the front.
Also, I should mention that I had to grind off the corner on the inside edge of my front brake calipers to clear the inside of these wheels.
I'm barely within doable with my setup, but it's the look I wanted, so I'm really happy with it.