I've tried 3 different Michelin truck tire shops within a 100 miles of home, which is as far as I'd want to drive for new tires, and all three said they couldn't/wouldn't want to sell used 6-7 year old tires to anyone. One said they just never had any call for them, another said no one but RVers use the RV sizes and no RVer would want slightly weather cracked tires even with 1/2 tread left, and the last one said due to the liability factor he never sells used tires (who knows what they will actually end up doing with them). I'm going to keep one of the six for a spare but guess I have to just junk the other 5. They are XRV 255/80 22.5 with 44,000 miles on them so they may all three be correct.