A good example of a bad camber angle is a overloaded Ford with twin I beam front end. We have a bunch of these in our school bus fleet. They wear the inside of tires all the time.
Sounds like a good time to jack up the front and do some checking. King pins first, check for in and out movement at the top and bottom of the tire. Up and down won't affect much in the way of alignment, but will need fixed someday. Next grab the tire on the sides and twist it back and forth watching the tie rods and drag link. To really drive good, check the steering box adjustment. With the truck back on the ground, turn the steering wheel back and forth watching the left front tire, it should be moving as soon as the steering wheel moves. You should have as little as 1" or less of steering wheel movement before the tire moves.
Let us know what you find, Joe.
