F10 550i Square or staggered LM 60 tires.

I have a set of staggered OEM style 351 wheels (8.5 x 19 and 9 x 19) that I want to use as a winter set up with LM60 tires. The winter set up will not be for deep snow as I have a SUV and AWD van for that purpose. I will be using the winter setup mainly for black ice, slush and very light snow. Performance wise (traction and cornering on dry and light snow conditions) which would be better, stagger or square? Or is the difference between staggered and square in such scenario negligible and life is too short to worry about or debate this issue. I live in the Pacific Northwest.

Although there would not be a very large difference in the real world, I would lean towards the non staggered setup for better slush, light snow traction and a bit more hydroplaning resistance. Since the car is set up to understeer a bit from the factory, a non staggered setup also tends to make the car have better handling (more neutral handling).

Winter http://www.tirerack.com/a.jsp?a=AB2&...nter/index.jsp