I used my Cub Cadet 149 for years with both a snow blade and the QA42A snow blower. I tried several different tire combinations. My driveway is mostly asphalt, with a concrete apron at the garage. The 149 is similar size, weight and power to the 782. Here is what I found:
- You need a minimum of two sets of wheel weights on the back axle. I had two sets of the CC cast iron weights, 26 pounds each, 4 total for around 100 pounds of additional weight on the back axle. (I weight about 230 pounds). WEIGHT IS THE KEY!!!! If you get enough weight on the rear axle, the tires won't matter.
- 23x10.50 turf tires with chains, and the weight mentioned above, will go anywhere, even in Buffalo, NY snow. However, they will scratch up your driveway, both asphalt and concrete, when the tires slip. Yes, they will still slip.
- 23x10.50 ag tires without chains work nearly as good as the turf tires with chains on pavement and snow. On ice, they slip like they are bald. Add chains, and these too will go anywhere, just like the turf tires. However, I found that I liked the ag tires without chains for my general snow plowing because they did not scratch up my driveway when the tires slipped.
I tried a set of the 23x8.50 turf tires with chains, and felt that they were no better than the 10.5 wide tires. That was the narrowest I wanted to go because I thought the tractor looked odd with the 8.50 wide tires. The 6" tires would look even more funny.
If it were me, and I was still using the tractor to plow snow on my nice new asphalt drive (or concrete in your case), I would have a set of new AG tires, and run 2 or 3 sets of weights for my snow plowing. I would mount one weight on the inside of the rim, and two on the outsides. You can do this by mounting the weights, while the rim is off the tractor, then bolting the rim back on the hub. The weights are made with a large enough opening to go over the hub. Or, fab up a weight bracket and hang suitcase weights off the back.
My dad and my grandfather both plow with a Simplicity Legacy 2-wheel drive tractor with 26 x 12.50 turf tires on the back and a 60" snow blade. Neither of them run tire chains, however they have a weight bracket in the back and 4 - 45 pound suitcase weights. They can push snow all day long, no problem.
I now have a Simplicity Legacy XL tractor (4x4) and a front end loader, but I have turf tires. I run NO weights at all, and can clear 2-feet of snow, but I have 4-wheel drive. My bigger point is, the right amount of weight, and you'll get the traction that you want.
1951 Farmall Cub, Cub Cadets 102, 104, 1811, 1864, Simplicity Legacy XL 4x4 Diesel with FEL, 60" mower, 50" Tiller