What makes a Liberty Trail Rated? I recently purchased a new Liberty Sport w/Latitude package. It has a Latitude badge where the Trail Rated badge would normally be. It has 4WD Low and I believe the Select Trac II 4WD system.
It is all a matter of tire and wheel size. Think taller sidewall for purpose of increased traction both from sidewall grip and the ability to be deflated to a lower pressure for improved traction.
Other than that there is no difference from being trail rated.
As for the "Believe Select Trac II System" you really should verify which system you have. There are differences in how you can drive both in 4WD. It can be a very costly mistake if you don't educate yourself.
"If you have a difficult job to do....Give it to a lazy man....He'll find the easy way to do it."
I think with trail rating it has to do ground clearance, sidewall depth, approach and departure angles, articulation. They are different ratings with in a trail rated jeep. for example the Wrangler has a much more severe rating. I am sure it could also involve axle housing strength, torsional rigidity of the chassis. I think in a rubicon has underarmor added as part of the package as well as tow hooks. Jeep doesn't really give much information about how they trail rate becuase they want to keep their competitors in the dark.
When you get knee-deep in a situation, floor it.