Indeed.. kids around here, and probably some Japanese people as well, will do all kinds of things that I wouldn't do. As for the trailer tire comment, that was meant for the 205/55. I'm not sure, but I think that is at least close to the size tire on my trailer, and those are on like 5.5" or 6" wheels, not 9's or 10's. Like I said it may hold air and a bead, but those are not the only duties of a tire. My zx is one of the few I have seen with 15x10's and appropriately sized tires up front. I know what it takes to do it and it isn't easy. And no, the sizes you mention aren't weird sizes, in fact they're quite common. Putting them where a 255 to 275 should go is the only weird thing.