Brian L.-
I'll second what Steve B. said, those original ribbed tires SUCK. They've been on all of my winter tractors, and when you're plowing snow you tend to not be able to steer at all. I had the same problem at my 1st plowday. I have some multi-trac CS tires on the front of my 582, and so far I like them. Haven't used them in the snow, but for everything else they're decent.