My father used 3/4 ton pickups in his business in the 1950's. With the old stringy wheel bearing grease, I never remember a failure. But we repacked them regularly. With today's grease the old ball bearings would outlast several owners. There is nothing wrong with ball ball bearings. I am 79 years old. I have never understood why people want to drive a 70 year old pickup, but are afraid of the bearings that were engineered over 80 years ago. I have been running semis for over 58 years. 50 years ago we had a lot of failures because the grease wasn't very good. Today with the same bearings we have almost no failures since we started semi fluid synthetic grease about 25 years.