I just bought a new mx5100. I need to know witch tires to get R4 or ag tires? I have 50 acres and 12 acres at my house lots of hills and rocks. I don't have alot of snow to plow. I live in the Ozark mountains. Just normal farming and cleaning up some lots from a tornado, some tree pushing. The tractor has R4's on it right now but I was thinking of telling them to put ag tires on it before they deliver it?? I don't know this is my first tractor. I've read of some people having traction problems with R4's in the forms, but it was people plowing snow???