"LT" tire pressures on Expedition
I moved up from "Heavy Load" tires on my Expedition to real "LT" tires. Max air pressure on the new tires is 80#, max pressure on the heavy load tires was 50#. I always ran my other tires at max press...
Forum Discussion
Rustycamperpants wrote:
Oh, one other thing, my tires ahave always been the same OEM size, 275/55R20.
Listen to what CapriRacer says. He is a actual tire engineer (Barry Smith) and not just someone who would like others to believe he knows more.
Also the tire tech who told you to pump those E tires to door placard 38 psi should know better.
A LT tire psi needs to be around 50 psi (at a minimum) to meet the P tires load capacity which the P tire comes at around 35 psi according to tire pressure charts.
I would think 60 -65psi would be a good place to start then add more or less if needed.
Be sure and have the high pressure rubber stems installed in the wheels. The same type comes OEM on 3/4 and one ton trucks work fine.
