Interesting info. So please correct me if I’m wrong but the info provided states to find your oem load/inflation pressure and if you are installing a different size tire you would inflate it to a pressure closest to the corresponding load rating?
Based on the 114 load rating on the OEM Goodyear, I should inflate my 33x12.50s to...80psi?!?!? I had to have read the chart wrong lol. I’m currently running them at 50psi cold
If the original tire was metric, divide the capacity by 1.1 first. The LT tires have a 10% safety margin built-in. Then look up the pressure for that size that equal or higher capacity. Note that the difference between C, D, E, and F load ranges is the pressure. At a higher pressure the F has more capacity than the E, the E than the D, the D over the C.
Also note that the capacity closely maps to 1/2 the axle GAWR. If there is a much lighter load a lower pressure may be possible. Just remember to increase the pressure prior to fully loading it, trailer or payload. That last part wasn't in the manual.
BTW, what are you using for a spare. It looks like the 33x12.5 will in the spare holder, but it will drop down 1.5 inches more than 275., probably making it the lowest part of the chassis.
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