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Old 01-13-2020, 02:02 PM   #75 (permalink)
EcoModding Lurker
Join Date: Dec 2012
Location: Newnan, GA
Posts: 37
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I was running 50 spi in my 2016 F150 and with 43k miles I had 1/32" less tread in the center so I dropped it to 45 psi. I average around 25 mpg on HWY with 2.7 ECO Boost, 4X4 and 3.55 rear end.
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