For CAFE reasons, Goodyears that come on factory vehicles, particularly trucks, have softer rubber compounds (which wear faster) for less rolling resistance. I too have also seen many sets of Goodyear RT/S wear out at 30K miles. I had some AT/S that I bought aftermarket and they lasted over 60K. They were great in the snow (don't know 'bout mud or rock, it was just a little S-10 Blazer). When I replace the Bridgestones on my H3 (after they wear out), I am going to look at Goodyear's and Cooper's.
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