Re: 11x24.5 tires
Reply #1 –
Welcome Skeeter,
24.5"
Are you sure they are not 11R22.5?
And, there is no "drop dead" date for tires. As one would expect, if not abused, they will last a lot longer than if they are.
Proper care and feeding of tires includes:
Always keeping proper inflation
If stored outdoors, cover them to keep UV light off them. Light colored covers are cooler and therefore better.
Tires do best when driven at least monthly and long enough to let them warm up.