I'm assuming that you are running in F Street Prepared (in which case, wheel size is totally open and R-compounds are allowed,) if you are in Street Touring wheel width is limited to 7.5" and tires must have a Treadwear rating of at least 140 (unless equipped from the factory with a lower rating tire, not the case with Accords.) Since you have a 4 cylinder, and consequently 4-lugs, about the biggest you'll be able to reasonably find will be 17x7.5, which is fine for 225s, and gives you a little bit of a sidewall for that occasional bump with the curb (not that you would bump it, but if someone else did, then those nice new wheels might not be so happy.) If I'm not mistaken, however, a more appropriate upgrade would be 235/45-17s to keep your speedometer reading correctly. With 235s, an increase to 17x8s would be in order, and short of special ordered wheels, the best way to do that would be to swap V6 Accord brakes onto your car. The V6 offers 5-lugs, and if you have a drum brake rear at the moment, swapping to rear disc will also be nice. And as a recommendation, a good 17x8 with 235 combo comes right off of the 04-up Acura TL, just swap in the centercaps from of 03-up CR-V or Element and the look will be complete.