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104 Posts
Showed a friend of mine an old theory the other day on his Ferd. He'd been running what the door jamb said for air pressure since he bought the truck in 05. I splained to him he should be running what the tire says instead. When he did, his MPG's in creased almost 1.5mpg! I run what's on the tire's wall. My Bighorns say 50 and that's what I run. My stockers said 80 and thats what I ran in them. Try it out and see what the fuel economy does.:w: The ride will be a little rougher, but hell, they're trucks right?:lol3: