Although I am on the opposite coast, I have driven with the PS2s in cold (near freezing) wet conditions and, IMO, they are way too slippery. These tires become hockey pucks anywhere near freezing temps. Unless you never drove the M3 in freezing weather, I would get a set of high performance winters. Just my opinion.
2016 M2 | Long Beach Blue | 6MT... coming
2015 M4 | Austin Yellow | DCT... current
2014 Corvette Stingray | Z51 | Torch Red | 7MT - Sold
2012 MB C63 Coupe | Performance package | Obsidian Black - Sold
2011 E92 M3 | Jerez Black | Fox Red | DCT | Competition Package - Sold