The OP said he doesn't have the $2k for better tires. Driveway damage is a issue so chains/studs would be out as both will leave scratches when spun. Once you pack snow and spin you have a ice condition and R4 or R1 (or any rubber tire) won't bite into a polished surface. Does the OP have insurance for any damage? He should. The customers should be aware that the equipment needs some teeth to have traction and scratches may happen.
I do have liability insurance, but over the last 25 years or so, I've built a reputation for doing good work for a reasonable price, without causing any damage. That's not strictly true, I've hit stuff in driveways, I've knocked over mailboxes etc, but nothing that required a claim. If I damaged my machine, I'd be toast though. Yes, when I spin the tires, I make a thin film of slush under the tires. I think 1/4" studs is overkill.
My
B2400 had those combination tires, like an aggressive turf tire. They were excellent. I've been using those since I bought that tractor new in 1995. I've encountered the same conditions many times. The
B2400 stuck to the road much better. My Subaru with snow tires has no problems with the exact same conditions exact same driveways. Neither have ever needed chains (OK, sometimes it would have been really nice to have them). Why all the sudden are chains or studs the only solution now?
All I am just asking if anyone has grooved or siped R1s. Yes, I've read every thread on grooving and siping R4 tires, I've seen all the adverts and reviews on R14s and Nokian T2 tires. I'd love a set of the Nokians, but that's new rims, + tires, $$$$ I can't afford. Same with the R14s. The rears I can find; the fronts (7.2-16) are a real odd duck, I can't find them anywhere. Even then, I'm still out thousands. where I could buy a groover/siper and save a lot of bucks.
That said, I'm not going to spend the money on a tool and slice up my current tires if it doesn't actually do any good on R1s. If I throw a groove down the middle of the lug as I see people doing on the much blockier R4s will it make the lug too unstable, and I end up chunking the tire when I'm doing dirt work in the summers? Are there different grooving patterns that work, like trying to make it R14ish? What if I just do sipes? Will that work, or do sipes only work with grooves?
I really don't want to do chains or studs.
Thanks.