I just got my new Toyo MT's for my 05 F150 4X4. Discount tire filled the tires to 35 psi. I just called Toyo, and the person I spoke with recommend 55psi for my truck. The max is 65 psi. I want to make sure these tires last. Anyone have a recommended psi for longer tread life? Does 55 psi sound too high? Thanks.

 

I have 33x13.5R18 M/T and everyone says to run at like 50 but when I did it only wore in the middle so I lowered them down to 40 and I get an even ware across them now sorry if this is no help to you though

 

hey 05black- 55 is what toyo told me too when i called them asking the same question- 55 is the MAX psi based on the stock rim- i ran at 45# on them and had 16k miles @ half wear when i took them off my truck, and mounted them on my moms 250SD. in the winter i would drop to 40# to grip more on the snow/ice i live in...

 

Thanks for the feedback. I does help alot. I really appreciate it. I want these suckers to last. I think I will try 45 psi and see how they feel. Thanks.

 

Well, I called Toyo again. I was told 55psi before, and that seemed too high to me.

Update on psi.
Got an email from Toyo today with psi and load specs:
Air pressures for Toyo Open Country MT LT33x12.5R18

Psi. 30 Load 1550
Psi. 35 Load 1965
Psi. 40 Load 2150
Psi. 45 Load 2325
Psi. 50 Load 2490
Psi. 55 Load 2650
Psi. 60 Load 2805
Psi. 65 Load 2910

Hope this helps. It did me.