Not a lot of sidewall exposed with low profile tires. I'd chuck them.What do you think.. looks like it went through the first layer, barely into the second? Trash, or OK to run? these are 6-ply sidewall, load range D
20psi was probably fine, especially on a light rig. Some of that terrain just eats tires.
OK cool, good to know!It depends on width, but at 8800lbs on 245/75s I can run 22f 30r for bad rocks. My KO2s survived some 50k miles, including Australia's outback dirt "roads". Despite all the high pressure (65psi) rock strikes, they did great. Finally had the internal belts break at the end. They still held air! Very tough tire.