OK, I'll admit you simply have a very good combination of equipment. I used to have chains on my tires ( 12.4 x 28) when I had rather worn out tires. Now that I put new tires on the tractor, the chains fall down between the tire lugs, and are not as effective, so I don't use chains any more. Another problem was very poor traction on ice or hard packed snow. I helped that problem by driving sheet metal screws into the top of the lugs. I used a screw that had a sharp edged top, and of course was not so long that it penetrated the tire completely. I put about 40 screws into each tire, and left them in all year. They made a big difference in traction on ice. After about 5 years now, many of the screws have disappeared, but I may reinstall some before next winter. I suppose there are tire chain sets that don't fall down between the lugs, but I'm not sure I want to use chains again. I think they tend to tear up my dirt and gravel driveway . Now that I bought a walk behind snowblower to help with my snow moving, I have to be careful about raising rocks to the surface. Compromises, always compromises !