I don't think you can run 225/45/17's without rubbing a little. I know Mazdamp_18 is running some, but I don't know which brand. I do know that not all 225/45/17 are the exact same diameter. Some are a bit wider than others meaning that you can't fit some, while you can fit others.
Quick review: The 225 Falkens DO rub, just a little, in turns on the atuox course, no effect on handling. I managed to beat ALL the WRXs in STX at the local autox yesterday, with my MSP all stock except for the tires and harness, and them all modded up. The only guy who beat me in class was a E30 M3 with all the mods allowed . I'll post a more complete review when I don't have 4 finals in 2 days....