Mark
They work great no real complaints yet. They work great in the snow although they tend to be a bit grabby when spinning your way up hills in the deep white stuff, but the fronts are way more aggresive than stock so thats to be expected. As for the ride on frozen ground at slow speeds you can feel the lugs a bit, but I have about 15psi in them cause they are a little on the short side at lower presures. They are pretty good at speed but again not as smooth as stock. Haven't had them in the mud yet cause I got them just before x-mas and everything was frozen. All in all they are better than the stock tires in about every way but the ride and even thats not bad.
hope this helps
shaggy

 

Next step, try clipping the CV piston spring??? for less tension, and use a timer system or radr to get accurate results.