Is the tire rubbing inside of the wheel well, or at the lip of the wheel well? If you take a moment to examine some other 360's you will notice that the tire tucks inside of the wheel arch lip, your tires may not stick out further than the fender itself, but it doesn't have to to rub on the lip. The OE 19" challenge wheels are obviously even tucked in further than the 18" stockers. Coincidence? Maybe, but I doubt it.
Of course, this is a matter of taste...
I'm just going to come out and say this; People think that style is just something you have, that its your own and that there is no degree of it, or way to quantify it. Well, there wrong. Style is developed by continual comparisons of all things asthetic. Your sense of style is influenced by your cultural, but it is developed by the examination and study of balance, proportion, perspective, and presence of the form in question. This may sound a little artsy-fartsy, but its proven at every major design studio in the world, including Pinninfarina. These designers are highly trained, highly educated, and well studied in asthetics. So, your opinion on what looks "pleasing" only holds as much water as you've carried from the river, and not a drop more. I mean, I've never been to an opera, have no idea what goes on inside one, and don't ever plan to attend one, but I could give you my "humble opinion" about operas all day long.
Heres how I will quantify it--the guy who designed the 360 OE wheels gets payed much more than the guy who designs HRE wheels.
Ok, so you like the wheels, that's cool. I can appreciate not wanting to look just like you came from a cookie cutter, but this is not just any cookie cutter, that is my point. Sorry, Im an unrelenting purist--I don't mean to come of as being so rigid or judgemental, but passions are sometimes hard to contain.