Haven't seen many automakers recommending higher pressures for winter tires. Nor the tire distributors.

However, I understand the logic of having softer compound winter tires and people interpreting that as feeling like an underinflated tire. In those cases overinflating them will make them feel more like summer tires. It just won't improve traction.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue