RE: FEA
Junk in = junk out.
Sure, those bearings will hold your truck up when it weighs 9900 pounds....on a smooth road. But will they continue to hold the truck up when it weighs 9900 pounds while running 55mph headed south out of San Felipe? Those bushings will put up with 250K worth of pavement, but will they put up with 25K worth of washboard road?
So I guess the question is, did the engineer design a part to handle the use that the 1% of owners will subject their vehicles to? Or did they simply build for the 99%, figuring that the cost savings will pay for any warranty repairs for the 1%?
And the next question is, did the buyer actually use the spec that the engineer made, or did they "find a good deal on a part that is almost like the one the engineer designed".