Old tires
If you're the least bit unsure, replace 'em. I was enroute back to Kingsville Texas and one blew apart, replaced it with the spare...and sure enough 60 miles later the other one came apart (pictured ...
Forum Discussion
I know it's financially painful to replace tires with good tread. But if they have aged out, it's much less painful to replace them than it is to have significant damage when they fly apart.
