I had an 83 with a high pinion 44 front and 53" tires - which weigh in at 350+ a pop with air in them. The 44 is real similar in strength to the 50 ttb. Never did anything rough with the truck, except for hooking chains with a 78 bronco. I blew out the rear driveshaft ujoint before anything up front broke... Like riot said, once you get to a 46" tire, a built 60 is the minimum amount of strength you'll want from your front end if you're going to wheel the truck. I'd throw a rockwell under there if I was doing it.