Ive found quite a bit of info for other sizes, but no info for 20's! Tire shop currently has 58psi in the front & 55psi in the rear. Im trying to smooth the ride out a little, can i go a little lower? I had this all figured out with my 2500HD with the 6.0 (load range "D"), but it seems to be a whole nother story with the diesel.

Current tire - 305/55/20 Nitto Terra Grappler, load range "E"

Thanks....

I run Toyo 35-12.5-20 M/Ts at 40 psi all around. It seems to ride pretty good. I think it is odd that my truck rides better than stock with a 6" lift and 20s.

And just like that I have 100 posts.:)

Snapper692, You like those tires? I just got a set too, and they seem to handle really well, I just had to trim the hell out of my bumper/wheelwell. I believe they put 40PSI all around

I too have Toyo Open Country M/T 35x12.5x20 and run 40-45psi and have a great ride!

I have the Open Country A/T's in 325/60/18....so nearly the same. None the less I run about 48 lbs front and 40 lbs rear and they ride so much better than the factory tires/rims did. As for the max inflation, Toyo.com should have some specs. I usually run below the specified inflation and find they ride and wear better.
Hopefully this link will work...

http://www.toyo.com/tires/tire_specsheet.cfm?id=17

If not, the spec sheet says 65 lbs inflation and 3195 max load.

Thanks for all the info.....Ill try a few different lower pressures and post my results. I think Ill try 40lbs, 45lbs & 50lbs and see how each feels.....

Smokin Dmax, I love the Nittos! This is 3rd set Ive owned, dont think Ill ever go back to BFGs again! Just Nittos & Toyos for me!! This is my first set of 20s though, and that has definately taken some getting used to! They're great tires both on & off road!

:ro)