In reply to kevin stephens:
> I would get winter tyres on sensible 16 inch steel rims to match the bolts on your hubs (obviously same tyre outer circumference).
That last point is a bit simplistic IMO. The OP did say that chains aren't recommend with his 17" wheels. Switching to 16" wheels but fitting tyres with a larger sidewall so as to end up with the same overall radius would quite likely (depending also on the width of the tyre) still leave him with a risk of the chains fouling the wheel arch, or something important within it. This is especially relevant with a front-wheel drive car, since the front wheels have a larger dynamic envelope (ie they move around more inside the wheel arch, because they do the steering as well as the driving).
I'd be surprised if the owner's manual doesn't have fairly clear advice as to what wheel & tyre combinations are recommended for the OP's car if the use of snow chains is required.
Another consideration is the legality of different wheel & tyre sizes if they aren't a combination that has been type-approved for the car. The owner's manual shouldn't recommend any combination that isn't. Any other combination may be problematic with the insurer of the vehicle (if they are told about it), or with the authorities should an accident occur.