"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
Thanks everyone. Rest assured I take most of what I read on these forums with a grain of salt. I have a guide titled "Determining Air Pressure For A New Tire Size" chart used by tire installers. I am confident of my 50-55# number. some of you have reassured me, thanks.
OEM tires are Pirelli Scorpion STR tires with a load rating of 111 (2,403# @ 44psi). These tires were squishy even with my pop up. I went to extra load tires with a load rating of 117 @50# psi and that was a major improvement. I used two sets of the 117 rated extra load tires.
My new LT tires are 117-120 load rating and at 80psi are good for 3,085# apiece. According to my recently acquired tire pressure chart inflating the LT tires to 50-55psi will give me load capacity of 2,335# per tire, nearly equal to the OEM Pirelli tires at the full 44psi (2,339# apiece). My goal is to have a much less "squishy" tow.
I am taking my first trip of the season in two weeks and it is a three hour tow one way. I am excited to see the difference the LT tires make. Thank you everyone for your input, all opinions are welcome!
OEM tires are Pirelli Scorpion STR tires with a load rating of 111 (2,403# @ 44psi). These tires were squishy even with my pop up. I went to extra load tires with a load rating of 117 @50# psi and that was a major improvement. I used two sets of the 117 rated extra load tires.
My new LT tires are 117-120 load rating and at 80psi are good for 3,085# apiece. According to my recently acquired tire pressure chart inflating the LT tires to 50-55psi will give me load capacity of 2,335# per tire, nearly equal to the OEM Pirelli tires at the full 44psi (2,339# apiece). My goal is to have a much less "squishy" tow.
I am taking my first trip of the season in two weeks and it is a three hour tow one way. I am excited to see the difference the LT tires make. Thank you everyone for your input, all opinions are welcome!
