Back when I was using the F2 combine, we got 5 inch rain just after I started combining, some fields opened.
I kinda sat on my rear didn’t do much. Day 5 or 6 and my wife kinda hinted, are you going to see how it goes soon?
Sure let’s go look. Took my little 4wd tractor and drove the fields I’d opened up. We ran into one wet low spot after another, spinning mud with all 4s. Last 2 spots I had to back out couldn’t get through.
Wife never suggested I get going again since.....
2 days later I could combine, with the 2wd F2.
Few years later I found a deal on an M3 combine, it was harvest time, we got big rain, I bought the combine private sale drove it home and started combining, literally hooked up the header chains crossed fingers and started, worked well but after a while the chopper was plugging with bean straw, I stopped and got off, my foot sank in the mud, here I was almost driving through water, the ground was like jello pudding, the wider tires of the M3 were carrying me so much better I didn’t realize.... the beans were thrashing well but the bottom stems were so wet it was gumming up the chopper.
Last fall it rained bad at harvest, my L3 pulled through nearly everything without much of a track. The beans it was so muddy the header wouldn’t float on the mud, so I had to combine a couple hours in the forenoon when it was froze. Then it snowed 3 inches, the header slid on the snow good, I could combine all afternoon again but the beans were tough, limited my time of day to combine that way.
Corn is easier, can drive on some stocks to float and don’t need the header so close so I’m sure I was in wetter ground.
Wasn’t a spot I couldn’t drive, I did have to be careful where I parked the wagons, tail wagging the dog, didn’t want the wagons pushing the tractor down the hills.... it never did dry up, we finished fall tillage in the mud, had to drive when it was lightly froze, once it thawed at 3:00pm was done, the tractor could pull but the coulter chisel would stop turning in the slime.
Neighbor harvested for me the year before, 1660 combine little bigger, heavier, but he had duals. He said my fields were good to drive in, no problems. It was also very wet fall that year, but it dried up some as we went over the days.
I get along in miserable conditions the last 4 years with the 2wds.
We just got 5.3 inches of rain yesterday, and had 10+ inches of rain in a three week period before that. My oats and barley are ripe, I get to go test the mud agsin in a couple days.....
Paul
. Will be coming up for sale soon 
.
.