if you have a late model (2012+) then the front brembo calipers will not allow anything smaller than a 20 inch wheel with a +45-50 offset. you MIGHT be able to fit a 19, but the offset is still going to be high and nobody I know has tried it.
never had an issue with ours in winter and its supercharged and the power comes in from 1800-2000rpm, just lock it in 2nd a pull away slowly then you are good to go.
