Edgar,
The pressures listed in the owners manual or on the door are good places to start
from, but because everyones load, driving habits and choice of tires usually vary
from what the engineers had in mind, try this little exercise to determine the correct
pressure for your truck.
Using white shoe polish, make a 3" wide stripe across the entire tread surface, including
the shoulders, on all four tires.
1. Without spinning the tires Drive the truck in a straight line, (1/4 mile or so).
2. Check the wear pattern of the stripes.
a. only worn off in the middle. (psi to high)
b. only worn off on the edges. (psi to Low)
c. stripe worn off across the width of the tire. (you got it)
3. Make your pressure adjustments in 2 psi increments.
4. Once you get the initial pressure, you can dial it in even more by running the
truck thru hard turns and adjusting accordingly.
Once this process is complete, you will always know ABOUT the correct tire pressure
to run regardless of tire size.
Hope this helps you and all others,
Scott Lemser
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