I just installed a set of NITTO Dura Grapplers size LT275/70 -18 on my 07. Have done a lot of reading and searching and cannot come up with a correct pressure for these tires. I know it should be more than the OEM tires, but how much ? The truck is only used as a daily driver with no towing or hauling on a regulator basis. Any suggestions greatly appreciated. I currently have them at 50 psi.

 

50 is just fine with those tires. If you decide to try a lower pressure, do not go below 45. The tires have a max load of 3640 at 80 psi, so 50 should work just fine with your GAWR You also should not need to go higher, even loaded.

 

Thank You kingfish51 !!! Much Appreciated !