If you wanna get a cheaper tire that's not terribly aggressive and not too noisy I suggest the cooper mud tires. I've run one set in 30 inch and currently have 40k miles on my 31s and still have tread. The 31s are actually hercules, but are the same thing. Tread pattern on the new ones looks almost identical to toyo mud countrys, and they work well in all conditions I've had them in. When I bought mine they were the cheapest 31in. mud tire I could find and had the best warranty also. They have good sidewall flex and ride decent, and aren't too loud. Hope this helps some.