As we discovered from the post from the tire engineer at a major tire maker,
pressures recommended by auto makers have to do with ride/handling
considerations and less to do with tire design parameters per se.
Sometimes, the tire maker actually complains to the auto maker such as
happened fairly with a maker who wanted to make the largest suv and wanted to
use auto tires to support it. Blowouts on one side of the deisel version was
traced to the fact that as equipped, the one front tire was way over its load
carrying capacity, even exceeding its built in design safety 'fudge factor'
by nearly 20 percent!
The manufacturer of the vehicle was persuaded at some trouble to accept a
light truck tire in order to end the problem. But wait, theres more!
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