In this part of the world there is a tire dealer - Les Schwab - that can order chains for a tractor. I got heavy duty tractor chains when I had my Ford 1700. I got a funny feeling when it took two BIG guys to carry the box of chains(for all four wheels) out and load them into the pickup. The rear V-bar chains were right at my limit of lifting ability. I would not even consider the purchase price or seasonal installation of a set like that for my new tractor.
got mine from there a few years ago and they help a lot. I did the 2 link chains and i also ordered some 'tighteners' to keep the flapping to a minimum
be prepared to have to remove some links etc to get them fitted correctly, so allow several hours the first time you put them on.
I found that if i jack up the tractor and using a bungee cord on the one end of the chain, spin the tire and it will pull the chain up onto the tire.. Then I hooked them at the loosest point.. spin the tire and grap another link.. spin the tire, and keep tightening until they were as tight as i could get them.. then I zipped tied the loose ends and put on the stretches..
Mine fit great, I also got the tensioner so and recommend that, a bungy works too. You may want to check clearances. I had to get spacers on a b to fit chains.