Tire Pressure

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454cid

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I used to run 40ish PSI in the front, and found that I'd wear the outside of the tires out. I never remember what I put in my truck tires, but I think I've been running around 55-60.

I've had stock 245s, 235/80s, and 265s, and one set of used 285s, but I'm back to 245s now.

I actually need to buy tires.
 

GoToGuy

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Unless your basic truck weight is high, as in having a service body mounted, running high pressure in your unloaded truck has no advantage. The higher pressures only make the tire less able to absorb regular bumps, and irregularities in your everyday driving, resulting in a harsher ride. Even more so in LT rated tire with it's stronger stiffer construction.
The purpose of max inflation rating is when the tire is carrying it's maximum load, to keep the proper tire profile.
There's a little item for the guys that always tow way over truck capacity, your not just over what the trucks designed for, your probly exceeding the capability of your tires.
And their is, unless it's been scraped off, a tag in driver's door jam that has tire size it left the factory with and tire inflation. Good luck.
 

Nad_Yvalhosert

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Blah, blah, blah. Ignore any and all of the tire jockeys. You want them? Get them.

I've got 315 75's on my 6.5' OE 8 lug wheels, daily driver!
 

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Nad_Yvalhosert

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As for pressure, spray some water on the ground. Drive through it and look at the tire pattern that your tire makes.

If its not full tread width, deflate.
If its shoulder heavy, inflate.

That's the best way to tell if you have the correct pressure.
 
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