Not sure about meds, but I can speak of old tires pretty well as I spent a few years rebuilding classical cars with my dad, including looking for original 1930 Plymoth (I think they were Plymoth) era tires at one point. About every set of original tires I ran across they had suffered horribly due to time and neglect until I ran across a set of eight in Texas. Drove down to look at them as the pics I was sent looked good to discover these old tires had been stored in crates filled with gun grease. After cleaning them up, they were exactly like new and had next to no problems at all so I think if they were stored properly tires could still be good after a 150 year gap. But tires that aren't cared for will begin to fall apart but not fast. Underground in a dry enviroment they might be good, but would I want to trust my vehichle with them? That's the other question. Next time I see my old man I will ask him the question.
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