First ? will 22/11/9 size tire fit on stock rims.
Second ? I want a good mud tire and was thinking about ITP Mud Lite yes--No ? there are lots of sizes but the only one close is 22/11/9

 

Yes, that size will fit the stock rear rim...GO FOR IT!

 

well are u looking for a pure mud tire? or just a tire that u can use all around but still does well in mud? for pure mud i'd get a set of 22" vampires, my bros bud has them on the back of his ds for the snow n mud and they bite hard, very impressed, i maybe get a set, or maybe some 23" mud bugs, if ur lookin for a all around one, they mud lites look nice, i know my excavators work good all over, had them for about 1.5 yrs and still holdin up great, have like 1/2 tread still too,