TireRack had a half-price alloy wheel sale, as they do off and on, random styles, random times for stock they want to close-out.
The 'catch' was that they didn't have a full set of 4 since it was model-closeout. Could only buy 2 or 3 of each.
I hadn't ever thought of this before: Take advantage of a sale like that by buying 2 wheels of each style. Then, put one style wheel on the passenger side of the C-Max, and the other different looking wheels on the driver side.
Saved $300 on a set of 4.
And who will notice? You can't see them at the same time, since they're on opposite sides of the car.
This is for if you can't decide which cool wheels you want. Buy 2 kinds and hide them on opposite sides of the car. Only observant people will even sense it.
Do not try this unless both styles of wheels are made of the same material (usually aluminium alloy) and have similar weights (mine were only <2% diff in tire+wheel weight. TireRack listed one as 21 lbs, and the other as 22 lbs, so thats not much. I weighed them at home and there was only 0.6 lbs diff in reality. They were both straight-spoke styles, so rotational inertia should be similar too. Widths and offsets should be the same too, and my offsets were only 1 mm diff, negligible there.
Also, these alternative sizes work: 215/55-17 on 17x7.5, 47 or 48 offset. For comparison, OEM size is 225/50-17 on 17x7, 55 offset.
You might want snow tires in the slightly narrower 215/55-17 size, and these fit great. Just make sure your offset is 47 or 48, NOT the original 55, to ensure they don't rub the outside fenders as smaller offset wheels may do.
It actually raises the car up by about 1/4", and the tires look like they fit in there even better than the OEM tires/wheels.
Rial Zamora on one side of C-Max, and Monte Titano MT2 Pari on other side: