Why doesn'the govt.(NHTSB)do something about these varying manufacturer failures? There are surely enough complaints and reports.
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I've followed NHTSA safe/car.gov trailer tire complaints for many years. What I've noticed is their lack of concern simply because there were no deaths or injuries.
Example;
....some years back there were over 250 Carlisle complaints and around 150 complaints on the Marathons on safecar/gov tire complaints website. I found on NHTSA homepage where they came in and looked at those complaints then removed 90 percent of them and declared the remaining ones as not of concern because no deaths or injuries were reported or wrong information was supplied.
NHTSA simply isn't interested in tire failure and vehicle damage. If there were no fatalities reported in the Ford Explorer/Firestone debacle nothing would have never been done by the feds.......JMO