Chalk test is your best bet.
Inflate to max PSI, apply chalk to all 4 tires and roll back and forth for about 10-15 feet.
Check the chalk marks, re-chalk the tires again. Deflate 2 psi repeat first step, continue till the WHOLE chalk mark is worn off.
Great looking rig. What is the maintenance history of the rig, If unknown I would definitely baseline the thing first. The cooling/heating system would be priority especially living/school in Utah.
Spare parts stockpile is always good too.
I scanned over this whole thread and everyone was spot on with their recommendations, but I would like to add check the check valve on the brake booster too.
And earlier in this thread I mentioned I would post pictures of the cleaned up wiring for the ML ACR and fuse.
This really doesn't give you an idea of what it was like before. I had a 1/0 gauge wire in the fix and everything now is 1 gauge for the dual battery and now the winch.
Here is...
Finally getting around to taking pictures of the cleaned up wiring and the little project I tackled today.
Here is a comparison from the original ground from Warn. I looked and the best I could tell the original is 2 gauge I bumped up to 1 gauge not a big difference.
Here is the ground...
Mil-Spec, but I only attach the required items that need to be wired directly to the battery. For my small installs I have ran a power wire via a breaker to a Blue Sea fuse holder and from there I source power for my smaller stuff.
I am getting ready to re-wire the power/ground side of my winch. The negative was cut down at one point and no longer reaches the negative post on the house battery. Working at a battery dealer I have access to new wire, I am going to be upgrading the current wire to 1 gauge and doing boots over...