As far as I know the wheel is the same -the difference is in the full Honda kit: The polystyrene tub that fits in the wheel well (for the tools etc) is different between the tourer and saloon. You don't really need that bit anyway, just something to stop everything rattling around.
It should have a T135/80D16 tyre on. Some people sell a 16 inch "Honda spacesaver" with a different profile, which has a slightly smaller rolling circumference (possibly off a civic or something?). I'm not saying it won't fit, it won't get you out of a tight spot, or that it will / won't throw a wheel sensor light or anything, but I'd go for the right one if you have a choice.