Sold the Cooper Discoverer STT's and bought a set of 315/75/16 MM Wild Country XTX Sport. The Coopers did pretty good in mud and were quiet compared to toyos and nittos. However they wear pretty fast so I sold them while I could still get a decent amount for them. These Wild Countrys are a great tire so far. Only have 2,000 miles on them so I can cannot say much for wear, but they are very very quiet. Also the smoothest tire I have ever had. They do pretty good offroad too. They are temporary tires as I plan on getting some different wheels in the near future. I also went with some 05-07 HD lights. Instead of tearing into the engine, I decided I want to make the truck look presentable first. Next modifications will most likely be newer style tow mirrors, bumper, and HD grill.