the Fusion with 17's though does it really matter, the 50's help tremendously
like they say in any weather, obviously no one here in the north states knows
what summer is yet in our cars. but I have driven with 13" 70's and 14 & 15" 75's never noticed a difference
in tire performance only in the cars themselves, the 13's on a RWD stick Chevette, and 14's on a FWD Buick Century
and 15's on an S-10 & Ranger (RWD obviously) and no matter what size FWD is better on snow, you could have
wagon wheels and it would still be better than RWD, but if I may pun and catch phrase, "wider is better", but like I said
it dependes on the cars platform & suspension as well at the tires.