How likely is it that more tires will be made in our stock sizes as time goes by? Is it likely that, say, Toyo will make the T1S in our sizes?

Not really thought about this before, as I've not had an oddball sized tire on a car before. It would seem that with the G35C and the Z sharing tire sizes on the 18s, there would be at least some market for manufactures to want to get a piece of.