Air pressure recommendations?

I have a set of Nitto recon grapplers on my truck 285/55/20 116T. I have been running about 36 pounds in each tire but the tire itself says I can run it up to 50 Psi. A coworker and I were talking about this today so I was wondering what other tundras run, what would you guys recommend I keep the tire pressure at?

 

I feel like in that size and nearby sizes, 33-36 is generally acceptable depending what you want to achieve.

To get less rolling resistance (+ better mpg), and a harsher ride, then higher PSI.
To get more rolling resistance (+ lower mpg), and a easier ride, then lower PSI.
If you're doing a lot of offroad, you may want to drop to the 20s in PSI.
If you want to key in for longevity, chalk test.

https://www.youtube.com/watch?v=_T2FfrRHaTU​

 

I run 40psi and air down for extended off pavement trips.

 

I would caution airing them 20’s down too much. They won’t behave the same as a tire of the same diameter on a 16 or 17” wheel. Not enough sidewall to flex. 20psi may be safe, but going down into the 9-15psi range that some will run will not be feasible with sidewalls that short. Not many run 20’s for off road usage because of that. As far as what to run daily? There are tables that can help you port the factory recommended psi over to your new size. You can also do the chalk test. You won’t be running 50psi unless you’re needing the max load capacity of that tire.

 

275/65/18 run at 45psi and rotated every 5k. I run em pretty stiff because I haul heavy

 

You’re running the correct psi. The max psi isn’t what you’re supposed to run.

 

My tires have a max pressure of 90psi. My recommended pressure (according to my door sticker) is 35psi, which is what I run in those tires. While I have never inflated or driven on those tires at 90 psi, I have tried them at 50psi. Not a comfortable ride or good performance (without towing a load). I couldn't imagine running them at max pressure. Definitely not the ride that I want for my truck.

 

Use this tool to get PSI in the ballpark when changing tire sizes or load ratings. it is accurate for normal load, if you run heavy with bumpers/winch, decked system or such will need a pound or two more