I'm a fan of the BF Goodrich All-Terrain TA tires. I use them now on the F350, although they wouldn't be my first choice if I regularly hauled heavy loads or drove long distances on the highway. Used them for years on the old F150 (size 31x10.5r15), and have experience with them on Jeep Cherokees and similar SUVs. Good in snow. Good in mud. Good handling for highway use, and not too noisy either.