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The Ford Explorer debacle makes me suspicious of car manufacturer's recommendations. Ford lowered the recommended pressure to 26 PSI to cover up chassis design deficiencies that made the car unstable. Firestone reluctantly OKed the change, even though the low pressure caused excessive heat and tire tread separation. You know the rest. Blowouts, crashes, deaths, recalls, lawsuits etc etc. I put 5 to 10% more than the car maker recommends and monitor tread wear and handling.
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