What happens in summer months, do you remove the studs or leave installed? Can you ride/drive on blacktop?
Haven't got there yet. Illegal on NY paved roads (they are oversized for winter and illegal rest of the year), so I'm sure I'll be taking them off for summer. It's a pretty serious investment - not as much as chains but still expensive, so I'll likely put them back on next fall. I don't generally go on paved roads in the winter.
On the good side, they don't come out like the ones I tried on my TC26DA. Those weren't made for tractors and they pulled out of the tire.
They seem to provide pretty good lateral traction - the tractor doesn't seem to want to slide to the side as easily as my TC26DA, but of course, it's also a substantially heavier tractor with larger and heavier filled rear tires, so I can't be 100% sure the studs are responsible for that.
As expected they are nothing like the big chains I had on the smaller tractor in the deep snow, but with chains on the front, I haven't been lacking for traction so far this winter. We haven't had any really big snows yet, but I'm pretty confident they will work out okay. The six foot rear blade is a little small for this tractor, and I'm hoping to find an 8 foot one used between now and next winter.
There is also a lot of chatter online about grooving and siping R4 tires for use in the snow. I don't think that would work well with the studs, though.
On a separate issue I have found Edge Tamers to be a big help when moving snow with the loader.
Oh, and on yet another issue, I thought the lower links were causing a lot of rattling noise, but it turned out to be the ROPs rattling at the front of the hinges. Some plastic shims seem to have that under control, so now most of the rattling comes from the rear blade, which will only be on a couple more months, I hope.. The TC26DA never rattled from the ROPS, but this one is designed a bit differently and is made to be easier to fold.