Combines Steering tires

I put 30.5 X 32's on our l3. On the back I used 1400 X 20's off of our honey wagon and put 26" wheels on it. The 26" wheels just seem too big for that combine. Even with those 20" wheels the back end sets higher. It would be nice, though, to go to a bigger size because the back end will still go down first in soft ground. I've thought about widening the rear axle and offsetting it to get the height back down to normal with taller tires (this would also make it track behind the front tires better). I also wondered if you could use a wider 20" tire like some water or fertilizer trucks run on the front. Any other ideasIJ

having mud problems ! we have had good luck putting a dual on but smaller leave the dual clearing hard surface by a good 3 inch these will not plow very much if still having trouble keeping wheel turning put set of chains on steering wheels here we put skidder ring chains on the drivers with the duals will out float much bigger rice grips