About treadwear: Wayne at Cleanmpg has the original tires on his Accord, 100,000 miles later. Completely even treadwear and still 4-5/32 tread depth. He's had them at about 60 psi since new. They are NOT worn down in the middle.
I know it's just one example, and not representative, but there it is.
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11-mile commute: 100 mpg - - - Tank: 90.2 mpg / 1191 miles
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