I'm in the same position at the moment with XD9's and looking at using a 265/35, would prefer not to roll the guards..
Here's a few from rimtuck.com without guard mods.
18x10+16 with a 275/35, -3 front camber and -1.5 rear camber and no guard mods.
http://www.rimtuck.com/setup.php?id=325
18x10+20 with a 265/35, -1.5 and -2 camber and no guard mods.
http://www.rimtuck.com/setup.php?id=322
When I first bought the car it had r34 gt-r rims with a 275/35, was going to add a 10mm spacer all round and it would of just cleared the guards. I checked the XD9's with a 265/35 against the old rims on a fitment calculator and it said the only difference is that the XD9's will stick out 7mm more.. I'm going to trial fit a tyre just to be safe before I buy a set anyway.
Here's the calculator
http://www.rimsntires.com/rt_specs.jsp?item=Wheel-Tire