Got a used 15 Spark EV on the cheap a couple months ago; the front tires will need replacing before long, and the traction trouble I've had esp in snow makes me think perhaps I should have a set of winter tires. Mounting and balancing twice a year sounds like a bit of a bother, so I've been considering also getting extra wheels.
I can find inexpensive gasoline Spark wheels and tires. I don't know much about wheel sizes and mounting concerns. I guess the gas Spark uses 6Jx15 ET45 wheels all round with 185/55R15 tires - just like the Spark EV's front tires, while the EV uses 195/55R15 on 6.5Jx15 ET54 wheels in the rear. How much of a problem is the wheel difference? I see some sources talk about minus sizing in winter, is that really inapplicable to a car that starts with such small tires in the first place?