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      12-22-2013, 02:54 AM   #17
Glideslope's Avatar

Drives: 2013 328i
Join Date: Jun 2013
Location: Seattle

iTrader: (1)

Thanks Guys,
I figured that... I know water changes state at 0C/32F at sea level per my Thermodynamics and Chemistry uni courses.

But, I was interested in the 37F figure used to trigger alerts. I realize it is due to a rule of thumb C figure the Europeans use translated to F and obviously know it is related to traction due to cold weather (it's not like airplane carb ice that can form at high temperatures).

Just wondering the BMW science behind the number 37... and I think I've read about the frost, black ice thing... and am satisfied.
2013 328i Mineral Grey / Luxury Line / Technology Package (HUD) / Cold WX Package / Lighting Package / Premium Package / 15% Ceramic Tint / XPEL clear film half-wrap / G17 9mm / GMT Master IIc