[roentgen72]

Recently got delivery of a Carbon black/black carbon fibre interior beauty. I am just north of Toronto in Canada and will put winter tires on the beast.

Driving mostly pavement and suburbs with 1x/week highway. Snowfall here is hard to predict but important for me to be able to get through initial snowfalls of 3-5 inches on occasion and more importantly being able to stop well on slush and pavement. Other than the standard BMW 19 inch 298M winter package is there any other combo that would clear the massive front calipers and discs?
Considering 20" or 19". ALso would like to know whether anyone has experience in running a 275/45/19 versus a 255/50/19 and compared to a 20 setup, if this affects handling and which setup you may have preferred. THis is a very complicated and car and I would hate to mess up the handling.
ANy and all thoughts appreciated