I HAVE 34-10.5 15 LTB SWAMPERS WHAT IS A GOOD PRESURE TO KEEP THE TIRES AT FOR THE ROAD.  

It's a stiff sidewall and not really made for the street. Probably won't make much difference with a pound or two like a radial. Play with it. Start at 15.  

I run mine at 8-10, even on the hwy...

15 is a good starting point  

THANKS FOR THE INFO , THERE IS 33 PSI IN THEM NOW WHEN I HAD THEM MOUNTED THATS WHAT THEY PUT IN THEM, ITS NOT MY DAILY DRIVER. WE ARE GOING TO ROUSH CREEK THE FIRST WEEK OF AUGUST I WILL AIR DOWN WHEN I GET THERE.  THANKS.  

I'm not sure what your PSI should be, but here's an easy way to find the right pressure for oversized tires. All you need is some chalk and a flat level paved surface about 100' or so long.

Draw a chalk line across the tread on your tires and drive in a straight line for 50 - 100'. When you look at the line it should be rubbed off evenly across the tread. If your too hard it'll only be in the middle and too soft will only be the outer part of the chalk line.

Hope this helps  

mudb8-:
I run mine at 8-10, even on the hwy...

15 is a good starting point

8-10 Seriously?    

yep, my trXus have never had more than 10psi in em since it made the 8 mile trip home from les schwab.