The tires are new, purchased a few months ago from a local tire shop. The fact is that all tires have an expiration date.
Surprisingly, many consumers and sellers of tires do not know about tire expiration dates.
The 11-character DOT code, shown in the red box, appears on the inside of tires.
Expiration dates for tires manufactured before 2000 were based on a 10-year scale because the expected life-span of a tire was 10 years.
Current guidance suggests that tires should be expected to last a maximum of only six years. A tire manufactured-date code, shown in the yellow box, may appear on the outside of some tires.