"The 30's will have to go WAY out before I would be comfortable running chains on them, especially aggressive style chains. I would opt for 28" R-1's if I wanted to run rear chains."
Went and talked and rode. I like the tractor. It is a TN-A, 12x12. No front diff lock. 4wd One thing that comes to mind is that it is pretty large which makes getting around in the woods a little more difficult. I think that I can deal with that, should I decide to purchase.
I brought up the 30" wheel/tire chain conflict with the salesman. He called someone over that was more knowledgeable. They both seemed genuinely baffled. They sell quite a few of these tractors and also winches. They, after much thinking, and stewing, did not offer any advice on the matter. Had they really not run across this issue? I don't know.
I do have comment/question on the 30 tires and using chains. I would really like the larger tires. Don't want to widen rear any more. But...I am committed to using chains. I want everything, and as usual, am too thick and stubborn to leave it alone.
Would it be possible to remount the fenders about 2 inches higher? From what I could see (hoping I didn't miss anything), it seems that it could be done.
Another thought and the one I like best, would be to cut the top (curved section) off the fender. Then fit a new top that would allow enough clearence (4-5 inches?), and also extend it at a right angle so it sits over the wheel as a wide, flat, 12" - 16" "shelf". This would allow it to be used to carry a toolbox, chainsaws, gas etc.
A shame to cut brand new fender, but I would not hesitate, because it would seem to be much more functional.
Do you think this would work? If so, what would you recommend for side clearence - space between tire w/chains and the fender - ?
Once again, I thank you all for the invaluable advice.
[I might add that in their shop they had both a good size Kubota and a TN 70, that went swimming. The 70 was getting a new block. The kubota, after it was pulled out of the water, was left overnight in the woods, and this apparently froze things, causing more damage. We have had many days below freezing and quite a stretch of below zero temps, and they still fell through the ice.]