Ok, I just called Les Scwab to see what they say. Although he agreed the E rating was a bit overkill, he said they should be just fine. He recommended running in the 40 psi range for everyday driving.
He said there is a formula to figure out the proper psi.
Weight of the vehicle/4=X
X/max pounds per tire = Z
Z /max tire presure = % of actual PSI.
I hope I didn't miss a step, but this sounds reasonable.
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bouncytruck 1972 K5
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