I'm running 315/75R16 STT Pros on this beasty. I have 10k on them so far so can't speak to long term use. But based on the wear to date I expect that at least 40k will be easily doable. The LC weighs ~6000 lbs so similar or more than our trucks. Highway manners and mud performance are both good in my experience. A little noisy, but not nearly as loud as the BFG Mud terrains I've run in the past. Very happy with these tires.