I mean really.. When it comes to mud, the answer is a simple one, drive a Russian tank..
The Germans just spent days and days trying to either get their tanks out of the mud or to keep them from getting stuck in it. Interleaved and or overlapping road wheels are mud's playground. Mud just loves to get all jammed up into them, loves it!
If you really want to have a lot of fun in the mud, drive an early Tiger with the rubber tired wheels and be sure you have all 8 of the outer road wheels installed as well. Totally and muddily awesome!
I'd take my Tiger out to the DAK field this weekend for a spin, but the field is probably under water right now and I don't have the schnorkel tube installed on the Tiger yet.
Now take a T34 or KV for a spin in the mud and that's as comfortable as "sitting on a beach, earning 20%", just like Hans Gruber would say. Yippee Ki-Yay Mutter#$#%@!