I put BX 26x12x12 tires and rims on mine and yes the back spacing is critical as these rub on the stick guards, the suspension spring and fender well just ahead of where your feet are. But I love the size and look of orange rims so it's okay. Doesn't rub on the fender much, just in sharp turns on bums mostly and only slight rubbing on the spring and stick guards. Would I do it again? NO.
But stock rims and ITP 26x12x12 would work because of their more rounded profile and still give a good wide tread. I tried a set on the fronts using the BX rims and no problems even with my heavy plow on front. No rubbing detected.
They do make a smaller ITP for the fronts but the same size all the way around looks cool and works well too.
