Michelins

i got some 40" Michelins a while back but i've been working on my rig and i haven't gotten to wheel these tires yet.just wondering if anyone else runs them and how they do in the mud? i know the 52s and what not (with basicly the same tread pattern) do pretty good...but their a lot wider.so just wonderin if any of you guys have ran the 40 or know somone that has..and seen them in action.