No you don't. Somebody told you that you do. :laughing: R4s suck for traction compared to AG tires, especially in woods, on hillsides, in snow they are horrible!!!! Literally suck! People tend to think they are better because they say "Industrial" on them, but the reality is, Turfs work better on solid surfaces when removing snow. AGs work better in dirt for traction. R4s are great on a construction site where there's sharp steel to puncture the tires, and that's about all they are good for. But that's just my opinion.(did I say they suck? because they do)
OK, they aren't that bad, but in all seriousness, what makes you want R4's? For the tasks you are describing, you want traction. Snow removal on a dirt driveway, pulling a driveway grader, maintaining a hilly road, logging, brush removal in the forest, etc..., AG tires excel at traction and will outperform R4s in those tasks. I predict you will be disappointed with R4 tires if you ever drive a similar machine with AG tires in your tasks.
As for 50" of snow.... that's not much at all when you spread it out over several months. Where I am, we average around 88" per year and I use a 1500# machine with turf tires to plow our 150' of paved driveway, and the neighbor's, too. Works fine. They said we had the 7th snowiest winter this year, but I only recall plowing 3-4 times. Didn't seem bad to me at all. Again, weight is not the driving factor in snow removal. You need HP to spin a blower, not weight, if you go the blower route. A big, heavy tractor with no HP won't spin a blower in wet, heavy snow, while a lighter, higher HP machine will. It's a balancing act.
However, your other activities would benefit from weight. I'd say your logging activities will be the driving factor in the weight and size of the machine you end up choosing. If you get something that'll pull decent sized logs, it should have plenty of power and weight for your snow removal.
How large of log diameters are you looking at? And how many? Because you said firewood, not lumber. Firewood can be cut up into rounds at the site it landed on the ground. A smaller machine can get in an out easier and do less damage to your forest floor hauling out rounds VS dragging out big logs, rutting up the soil with your tires, etc...
In the end, it's all a balancing act between your tasks, how fast you want to be able to do them, and your budget. You can do large tasks with small machines, but you have to take smaller bites. Good luck in your search. Take your time and don't jump in too fast. Test drive as many machines as possible in as many conditions similar to yours as possible.
And one final monkey wrench.... a good read. Long, but well worth an evening's read. Again, good luck in your search...
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