Tire Pressure Help

2024 Sr5 4x4 CrewMax 5.5 with Toyo Open Country A/T III LT315/70R17 121/118S

I used this calculator and it says to run them at 35. Is that correct? I bought the truck used and I have never owned non-OEM spec tires on any of my vehicles. Thanks!

 

That calculator is good and puts pressure in the ballpark when switching to different load or size tire. You might adjust it a pound or two, depending on how you load and use your truck.

Pressure sound about right, I ran 34/35 depending on load with metric 33s and now run 35 or 36 with metric 35s. I think you are good.

You can also perform a chalk test to confirm.....just search for how to do that, super easy and vids on youtube will walk you thru it.

 

Thanks! 90% of the time she will be a grocery and family hauler lol