I've been in this area for several years, even through the Snow storm we had a few years ago. Been fortunate that I never had to need to have winter tires.
That said, I swear, this type of thread comes up every year. Recommend to
http://www.m3post.com/forums/showthread.php?t=613973
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Retired: '06 BMW E46
///M3
Current: '08 BMW E60 DINAN
///M5, Interlagos Blue, SMG
DINAN Stage 2 Suspension, Exhaust, Stage III Software, Front strut braces,
Intakes, 13% Underdrive pulley, 3.91 Differential, RPI Scoops.