What PSI for 31x10.5x15 ko2s?

What psi ? I have 40 all year round. I live in LA. Thx!

 

any weight in the back? Load range of tires?

 

Chalk test or whatever float your boat

 

C range & 500-600lbs in the bed at all times.

 

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Anywhere between 12 and 55 will work.
Start with 28 and work up until you are satisfied with the pavement performance. Then adjust when you ride elsewhere.

 

With 500lbs or so I’d say the 40 psi is a good area to be in
I run 32 rear or so with 200lbs in the back

 

32 psi for me. Great wear over the last 30k miles.

some will inflate it to 38psi but the truck is super stiff and I don’t enjoy that

 

Tire place put 55# in mine today. 265-75r16.

not sure if I’ll leave them there a bump them down to 45.

 

what is the reason for leaving them at 45psi? that is was above what toyota suggest.

 

What truck is this going on? I have a 03 DCAB 4X4. No extra weight and those exact same tires in C load. I'm 25F and 24R. Chalk test confirmed perfectly flat wear.

 

I would think it would be more important to follow the tire manufacturers recommendations, than Toyota's.

 

I never heard of a tire manufacturer recommending a tire psi. I know they have a “max psi” label.

usally they recommend what the car manufacturers says to run.

 

Well I’m at 47 front and 45 rear now. Will try that today and see how it goes. If I need to go down I’ll go down.

 

If they are LTs, 37 is the adjusted recommended psi for that size.

 

Which vehicle are they going on?

 

I’ll probably end up around 40 when it’s all said and done.