I have used set of Nitto Trail Grappler tires size 295/55R20.  Tires are in good used condition with tread Seth between 7-8/32".  These tires come new with 19/32" so tires have approx 40% tread remaining.  There is no uneven wear and tires were rotated regularly.  These should last many more miles and can provide a good set for the short term.  

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