Forum Discussion

cj_rezz's avatar
cj_rezz
Explorer
May 23, 2020

PSI of LT tire after upgrading from P rated tire

I know this topic has been brought up lots over the years. I’ve read all the posts I can find on the topic on both clubarmada.com and rv.net forums, but still couldn’t come to a conclusion on what PSI...
Tow Vehicles
time2roll's avatar
time2roll
Nomad
May 24, 2020
CapriRacer wrote:
Totally wrong answer!!

The correct answer is: If the numbers in the size are all the same, in order to carry the same load as a P type tire does, an LT type tire has to use 15 psi more (more or less. Precision isn't necessary here!)
I believe my truck with common P tires took 32 psi. My factory options included LT and call for 35 psi on the door sticker. Same size tire.

I would go with the load tables to cover GAWR and add 5 psi not to exceed the sidewall max.

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