Giving a definitive expiration date on tires is no easy task. Tires carrying a heavy load or left outdoors in a desert-like environment with infrequent use are examples of the most severe service conditions. This will certainly shorten the lifespan of a tire. On the other hand, a tire that is driven only daily, garage parked and in a moderate climate will have the potential for the longest lifespan.
The tender loving care or lack thereof on behalf of the owner also contributes to tire life. Regular cleaning, air pressure checks and rotations and alignments all contribute to maximizing tire life. Some possible areas of neglect and abuse that will shorten the lifespan include overloading or running the tire underinflated. Road hazards such as potholes or curbs or other punctures, cuts and impacts can result in irreversible damage. A tire's durability can be compromised when abused or damaged.
This is why it is very difficult to determine the lifespan of a tire based on a calendar age. Tire Rack has found 6-10 years in service as being a reasonable expectation.
If you have more questions, feel free to contact your favorite sales specialist at Tire Rack for more information.
The tender loving care or lack thereof on behalf of the owner also contributes to tire life. Regular cleaning, air pressure checks and rotations and alignments all contribute to maximizing tire life. Some possible areas of neglect and abuse that will shorten the lifespan include overloading or running the tire underinflated. Road hazards such as potholes or curbs or other punctures, cuts and impacts can result in irreversible damage. A tire's durability can be compromised when abused or damaged.
This is why it is very difficult to determine the lifespan of a tire based on a calendar age. Tire Rack has found 6-10 years in service as being a reasonable expectation.
If you have more questions, feel free to contact your favorite sales specialist at Tire Rack for more information.

Thanks,
Jim
Thanks for your question.
10 years and out is the rule. Your tires are definitely outside that guideline, I have to advise replacing them. There could easily be internal deterioration that can't be seen with a tire.
Take good care and enjoy that car!
I will probably put over 30k miles on my car (a 2006 Escape) this year and will more than likely be replacing these tires before they reach the 10 year old mark as they are around 5 years old now.
With these installed on my car, what precautions should I take with these tires over the next couple years of service? Is there more of a risk of failure since they were stored mounted and inflated vs. if they were stored for the same amount of time, unmounted in a warehouse? Thanks!
To be conservative, I would suggest taking to a tire shop for an inspection. Technically even with only 15 miles on them, they are considered in use for that entire time, which puts the 6 year in use guidance in play.