I was using that
http://www.miata.net/garage/tirecalc.html tirecalc thing (which rocks, let me just say) and the different between the 215/45-16 nad the 225/45-16 as far as sidewall goes is 2/10 of an inch. That's like this ""' (at least on my screen) all the way around. It seems like that would be difficult to detect. I don't know. Wishful thinking, perhaps? I guess I'm liking those Falken Azenis tires, and they only come in 215/45 in the 16" anyway. I'm worried that the Ecstas won't be up to par compared to the KDW, whereas these Falkens are 108 (I know I said, not above, but at tires.com shipping is free, so that makes up for it) and I'm a reasonable believe in you get what you pay for, so it'd make sense that they would be close to as good as the KDW. If I have to, I'll just replace the KDW, but I'll have to wait until fall when they drop the price back down to 89 bucks. I'm none to happy about that little game, let me tell you!
Chris