..I've never intentionally run more than 38 psi in any car or truck tire I run on the street..I was raised with literally everyone I've ever met and had the subject come up (until my wife), that 30-35 psi was recommended for street driving, 40 if you really want to stretch your mileage a little bit at the cost of ride quality. The exception being commercial truck tires, where I run 75-80 out back and 90 up front, if I'm the one driving.
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