I've been running a 54" Erskin rear snow blower on a
B2910 for years. It works very well and would probably handle a 60", but I'd be concerned about it on a BX. I have no personal experience using a BX, but I've seen plenty of them, so take all this in that context. In my experience there are three considerations when matching a snowblower to a tractor and property. They are 1) Power, 2) Clearance/width, 3) Traction
First, Power. In deep snow the 54" blower really strains the 2910, which is around 25 PTO HP if memory serves me. In fact, it's about the only implement I have (and I have a bunch) that can consistently drop the engine RPMs. I'm in VT and regularly clear 12" at a time. As others have stated, you can just go slow to compensate for this, which is true, but there are limits. From this perspective of power, I'd suggest you limit yourself to the 54".
Next is width and clearance. Mine is just a tiny bit wider than the rear wheels, and run into the issue you describe when rounding corners. There is inevitable fall-back of snow into the cleared area, and if you don't keep the loader up high enough it will drag snow back in. It's for just this reason that I've thought about a 60", but after 5+ years have not found it enough of a problem to so anything about it.
Last, and I think most important in your case, is Traction. I've actually found this to be the biggest challenge. I have some rolling ups and downs on my road, and a few areas where I clear paths around the house and property, and I (the tractor) often struggle to push the snowblower. The consistency of the snow is a big factor. If it light and fluffy, it's no big deal, but when it's heavy and dense it can be a real challenge. Even with chains on all 4 wheels loaded tires front and rear, and the loader mounted and filled with snow, the tires will spin on the steeper uphills. This would only be worse with a 60". Also, the snow blower hangs pretty far off the 3PH and makes the front end very light. This is what drove me to fill the front tires (I used foam fill) and to get front chains. If you have flat ground, paved surface, and get smaller snow falls this will be less of an issue.
I've been configuring a much larger replacement tractor (
L5740) and in debating between an 84" and 74" snow blower I decided to go with the 74" for all these reasons. It will clear the rear tires by only an inch on each side, but I'd rather deal with a little fall-back of snow than be struggling to make forward progress.
Hopefully this will help in making your decision
