Yet Rangers with those tires have also experienced a greater than normal rate of tire failures. It may not be getting the same degree of attention, but the failures are still there.
I also have found the claims that the Explorer flipped at 30psi tire inflation to be dubious at best. I have read the claims and the rebuttals, and the claims don't have much of a leg to stand on in my opinion. The best reasons I can find for the 26 psi is a softer, more carlike ride quality. Also, 26 is not unreasonably low. Both Firestone and Goodyear told Ford the pressure was reasonable for the tires and the Goodyears have not suffered from any issues because of it.
Unfortunately, since tires can look fine when defective and issues are reported to the tire manufacturer, the data is not necessarily available to compile as quickly as one may like. I believe you have to be able to trust people to do the job you hired them to perform, and it is on them if they do not. The only thing I might place on Ford is to not have a better system of tracking tire failures.
I think you are placing far too much expectation of perfection on Ford and nothing on Firestone failing to deliver what it promised.
