^ Thanks for the compliment!
You’re correct, I meant that to be “within reason” and like most things it’s very subjective. A tire sitting in my driveway here in western WA will fare better than a tire sitting in a driveway in southern AZ. A full tire will fare better than a half flat tire. Etc.
I should add that I haven’t had trailer tire issues other than those I feel attributable to age, extreme UV exposure or because they had “Marathon” stamped on the side.
There is validity to excercising a tire for sure. Even newer radials take a bit of a “set” after not being flexed for long periods of time. Although on a much lesser scale than old bias tires. That there is proof it’s better to keep them rolling.
Not to jynx myself, but the boat tires are going on 8 or 9 years old now. Garaged year round and no long hot trips since before they were “expired”. I still trust them for local trips, but if I end up taking summer roadtrip they will be replaced.
The other part is heat and speed. While an old tire that is partially degraded may hold up fine on slow local trips, that same tire has a much higher potential for failure running 70-80 mph, loaded in 100deg summer temps.
