Get the M68's with some summer tires. It is definitely a step up from the 205/50/17 all seasons. For the winter you could stick with the all seasons or if you are in serious snow country, like me, I'd recommend getting some snows. I went with Michelin Pilot Alpins all around in the winter and going through the snow with the AWD was like driving on dry pavement.
Now if we could just get BMW to dump the increased ride height idea for the next generation xi's .... and maybe an ///M version?
Now if we could just get BMW to dump the increased ride height idea for the next generation xi's .... and maybe an ///M version?