i don't have a scan gauge, my tire pressure is around 35 PSI, and my daily commute is usually about 16 miles round trip, about 75% highway
i have lightened up the back of my truck up about 350 pounds, i had a factory tonneau cover that weighed about 200 pounds, they said in the manual that it saves fuel... yeah right, and i took some sandbags out of the back that i use for winter driving
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