From your thingy under your name, you live in MI. You do not get the sun and airborne chemicals that cause the tire sidewalls to decay nearly as much as some people get elsewhere.No you didnt. I just replaced the tires on my antique. They were 30 years old. They looked like new. I've never had a tire blow out. More things to worry about. It's your money , spend it as you see fitI have been driving 50 years, if I replaced tires every 8 years on all my vehicles, trailers etc I'd be broke.
If you see the sidewalls start to look like a wall made of tiny tiny bricks, tire 'checking', it is likely time to start shopping for replacements. I think the span quoted of six-seven years is favored by tire vendors and makers. I don't think tires suddenly become "dangerous" at that vintage, and if your driving is around town at urban speeds, I wouldn't worry about replacing due to vintage. OTOH, if you were regularly driving the freeways and lived in areas with much more solar exposure, you might pay attention to age more than miles on a set of tires. It takes a long time for the sidewalls to fail even after they have started checking. Most times(not all...) there will form longer sections of cracking in the sidewall, and that is an indicator of impending failure. In addition, the tread may start to separate from the carcass, causing a 'lumpy' ride as the tire can become out of round. This can occur even with a high percentage of tread left.
I have been driving since the firs Mustang production lines were engaged for retail vehicles, and never heard of ties expiring due to age. Likely because they all wore out long before that, as getting around 20,000 miles was considered average wear back then, and most were worn out or ready for recapping by the time the sidewall was getting damaged by sun and aerosols.
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