I have the 255/50-17 Kuhmo ASX'* on my SSEi. I just battled home in 4 inches of snow tonight. The first good snow I've had them in. A real test. Those suckers are phenominal. She felt very controlled on the interstate (slick as snot on a doorknob). I think some dude in a 4-wh drive ut must have been surprised when I kept up with him.
I rolled up my steep drive like I had tank treads. Never done that with any tire except PZero'* before. We have ASX'* on the GAGT too (but stock size there). Same experience. Wear is fantastic, at least at 15K miles so far. Wet and dry is up to my expectations. They're quiet and bite like spikes around curves. The SSEi suspension doesn't hurt either.
Someone on this thread said their RSA'* had good snow traction. In my experience I've never been in any RSA-equipped Bonne that had good snow traction. Politely I say that fella should try a good 4-season Super High Perf tire like the ASX and THEN report back about the comparison with his RSA'*.
FYI- I funned around in a large parking lot trying out the Stabilitrac. I could not get the sucker to stay in an out-of-shape condition for too long. The Stabilitrac straightened her out real quick. The ABS would kick in and some ghost would grab the steering wheel from me and "righten the rudder" real spooky like. Somebody did their homework on that system. Peace..................