I think it would be better to go with a much smaller diameter wheel than 17" for the winter. I run the smallest possible size that will fit over the brakes. That gives me the most amount of sidewall to protect the rim from debris, ice, curbs, pot holes, and anything else that lives on the road during winter. Plus the smaller the wheel, the less snow/ice build up there is in the wheel between the rim and brakes.
As for the question of will they fit? Yes, any 2000-2011 Focus wheel (over 15") and 2011-2014 Fiesta (over 15") wheel will fit. They all have a 4 x 108 bolt patter. Contour, Mystique, and Cougar wheels will also fit.
As for the question of will they fit? Yes, any 2000-2011 Focus wheel (over 15") and 2011-2014 Fiesta (over 15") wheel will fit. They all have a 4 x 108 bolt patter. Contour, Mystique, and Cougar wheels will also fit.