I have been running the sidewall maximum pressure. I haven't done any driving at lower pressures to check mileage differences.I improved my 25 mile mile a bit. For the record, I'm using Interstate 19 between Tubac and Tucson, which is has an elevation drop of about 450 feet spread over 40 miles. Rarely is there any wind of note. I set the cruise control to 60 and pumped of those tires to 43 psi.
I usually run 71 mph on the interstate (about 55 miles) and 59 mph on the highway (about 35 miles) during my daily commute.
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