right rear tire wear excessive on new tires at 10,000 miles
Tough luck.
In the total absence of information about your problem, I’ll take a wild - A - guess and say you have a really bent wheel on the right rear.
If you’d like some actual help, please describe your problem in detail and tell us more about your car. Just 2012 Liberty isn’t nearly enough.
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Take it for an alignment and see what they say.