My first 4wd was a 1947 willys jeep. I had 31's with a power lock and drove it everywhere..I think i spent more time being towed for the first year than i did driving it on its own power.    I used to wish for 33's, and would tell my self that 33's would be the biggest tire i would ever need.  Well several jeeps later and about 15years later, here i am with 37's and want to step up to 40's..  funny how that works..