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205/60/16 (stock) diameter: 25.686 in.
225/40/18 diameter: 25.087 in.
225/45/18 diameter: 25.972 in.
215/45/18 diameter: 25.618 in.
215/40/18 diameter: 24.772 in.
Best match is the 215/45/18. If you want wider tires, then you will either be .3" larger or .6" smaller diameter. I'd pick the .3" larger over the .6" smaller just to keep a small delta.
The problem with ABS and TCS is that they can use calculations based upon the tire diameter. From the tire diameter then the car knows how fast you're going, for one. Since the ABS system is basically one that just pulses the brakes, the rate at which it pulses the brakes is very important. If it is programmed to take a speed measurement, pulse at a rate, then evaluate effectiveness, then it could give you too little or too much braking before making an evaluation since its calculations could be thrown off.
Of course there are a variety of ways to program an ABS system and some could be more prone to problems than others when it comes down to diameter changes. Small diameter changes, like on the order of .25" shouldn't affect it at all since those can easily be varied by the load in the car, tire pressure, etc.
I wouldn't worry about it too much unless making a diameter change of, say, .5" or more. But that's just mere speculation.
I'm not sure how Honda's systems work, but as an example some ABS systems work well in snow and others simply lock up the tires. That just gives an idea of how much they can vary.
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