I'm running 255/35 front and 265/35 rear Bridgestone LM-60. Some run a 235 front but I was worried about sidewall height in winter. Also, some run 275 rears but I would be worried about snow traction... so, 255/265 was a middle of the road compromise. I find it works well so far in cold, wet weather. No snow yet so I can't comment on that.
2014 Corvette Stingray | Torch Red | Z51 | On order...
2012 C63 coupe | Obsidian Black | Performance Package (481hp, 443ft/lbs) | Sold
2011 M3 coupe | Jerez Black | ZCP/DCT | Sold but never forgotten nor will the love affair end
2010 M3 coupe | Alpine White | 6MT | Sold