I've ran a set of BF Goodrich KO2's on my Tundra, they were not much louder than the Rugged Terrains the truck came with. Great in sand and mud.
Right now I'm running 255 85 R16 'pizza cutters' on my 2.7L Tacoma. They are one of the narrowest 33" tire on the market. I've ran them in snow, mud, sand, rocks, gravel, and on the road I'm very happy with the performance. They are tougher than a $2 steak as far as puncture resistance goes (ever had a flat with all the BFG's I've ran actually) and soft and flexy when aired down with ample sidewalls. I've gone as low as 8-10 psi. I also run factory TRD OR rims that are 7" wide- perfect for narrow tires and I have no rub issues, not even a cab mount chop. I'm lifted about 2.5" on 33's and my turning radius is not affected at all- I find this very important on trails, especially when it gets technical on rocks. I do however think my next set will be slightly smaller 235 85 R16 KO2's to save on tire cost and fuel as do live way down in South Texas and to get to the closest place I can really wheel away from the beach is 3 - 7 hours... until then I'm happy with these KM2's as they are awesome offroad!