Alot will depend on the snow conditions and depth. If you are in a region that gets alot of light fluffy snow you will have no problems plowing 6-8 inches with weight on the rear rack (100lbs+). If you live in an area that gets wet heavy snow, you may be Ok plowing 2-4 inches with chains (on the rear tires) and weight (on the rear rack).
I regularly plow up to two and three feet with my rancher 4X4 of light fluffly snow here in Wyoming, but in the spring when we get wet and heavier snows, it gets tougher to plow much over a foot or so. Alot about plowing snow is not to try and push a full blade load at once. Another problem I have in the spring is the plow isn't heavy enough and wants to ride up and on top of the snow I am trying to push.
One factor is the rancher 2WD has the power.....it just doesn't have the traction.
Weight and good tires are alot of the key.
The one problem I can also see with the 2WD is getting in a snow bank too far and not being able to back-up. The 4WD works good for that since the weight of the plow on the front gives good weight to the front tires, allowing you to back-up easier, where the 2WD will have no traction on the front and lifting the plow will take weight off the rear wheels again reducing traction.
'07 Rancher 420 FM
'07 Rancher 420 TE
'95 J.D. Gator
'93 Yamaha SX Exciter
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