I have 2, 215 / 75 / 14" Goodyear Marathon's that would be good for spares. They have about half tread. I just bought a used trailer and replaced all 4 tires. I am using 2 of the used for spares myself. I believe the date codes are 07' or 08', so I would not use them for anything but a spare. Ifs you are in the Orlando area and want them - just buy me a beer and they're yours...