The wheel size ALWAYS has to be the same.
So, no they will NOT work.
because you didn't specify that you were going to buy new rims...Why does the wheel size have to stay the same?
You know what your right I don't know why I said 205/50 I'm getting old I forgot that fast from going outside to check to postFirst off, I think you should double check the stock tire size on your 2012 Focus. I believe the correct size is 215/55R16 (25.2" diameter), not 205/50R16 (24.1" diameter).