Ten years is the hard stop. In Orlando heat, plan on new tires around year six, and have them checked every year from year five, even with tread left.
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- Orlando averaged 129 days a year at 90 degrees or hotter, 2016 to 2025
- NHTSA says tire aging is a bigger worry in the southern Sun Belt
- Ford, Nissan and Mercedes-Benz say replace at six years
- The last four digits of the DOT code are the week and year
- The spare ages too, even if it never touched the road
129. That's how many days a year Orlando International hit 90 degrees or hotter, on average, from 2016 through 2025. That's our own count from NOAA's station records in ACIS. Heat is what ages a tire, and NHTSA says tire aging is a greater concern in the southern Sun Belt.
So the answer you see everywhere, that a tire is good for 10 years, is the ceiling. It isn't the plan. Not here.
In Orlando I'd treat six years as the line and start yearly checks at five. The tread depth won't warn you. The date code will.
How Old Is Too Old for Tires in Orlando?
Six years for most cars, ten years as the hard stop. Each number has a source behind it.
- Five years. Michelin says that after five years of service, a trained tire pro should look the tires over at least once a year.
- Six years. Ford, Nissan and Mercedes-Benz tell owners to replace tires six years after they were made, no matter the tread, per Edmunds. Discount Tire also says most tire maker warranties end at six years.
- Ten years. Michelin says replace tires ten years after the date they were made, even if they look fine. Discount Tire won't service a tire that old.
Your owner's manual wins over all of these. Michelin says to follow the carmaker's schedule for the tires the car came with.
Why lean on six instead of ten in Orlando? Because the ten year number is a worst case cap meant for everyone, from Maine to Phoenix. A tire in a garage in Minnesota and a tire parked on a Kissimmee driveway all summer do not age at the same speed.
Why Orlando Heat Ages a Tire Faster
Rubber breaks down from heat and oxygen working together. NHTSA calls it thermo oxidative aging. Its summary of its own tire aging research says aging failures tend to happen in high heat states, in summer, during the day, at highway speed.
That last part is the I-4 commute in July.
When NHTSA built a lab test to fake years of aging, it modeled Phoenix. Its oven test approximates four years of service there. So I counted hot days at three NOAA stations to see where Orlando sits.
Orlando Bakes Tires Six Times as Many Days as Chicago
Average days a year at 90 degrees or hotter, 2016 to 2025. Scale to 200 days.
Orlando gets about 70 percent of Phoenix's 90 degree days. Add long summer idles in I-4 traffic on hot asphalt, and the tires on a parked car baking in the sun.
The days at 95 or hotter swing a lot here. By the same count, Orlando had 2 of them in 2017 and 50 in 2022 and again in 2024. From 2022 to 2025 it averaged 41 a year, up from 16 a year from 2016 to 2021.
Who in Orlando Should Worry Most
NHTSA says most people wear the tread out before age becomes a problem. Edmunds puts it at three to four years for someone driving 12,000 to 15,000 miles a year. NHTSA's own list of people at risk is the low mileage crowd.
- A second car that sits in the driveway most of the week.
- A car left here all summer while the owner is up north.
- An RV, a trailer or a weekend car.
- Anyone who just bought a used car. You have no idea how long those tires sat.
Read the Tire Date Code in 30 Seconds
Look for the DOT Tire Identification Number on the sidewall. NHTSA says the last four digits are the week and year it was made.
- Find the letters DOT
Look low on the sidewall, near the rim. The code may be on only one side, so check the inside face if the outside is blank.
- Read the last four digits
The first two are the week, the last two are the year. A tire stamped 4320 was made in the 43rd week of 2020.
- Count from that date
Not from the day it was put on your car. A 4320 tire is six years old in October 2026, even if it was mounted last spring.
- Write it down for all five
Four on the ground and the spare. Mixed dates are common on used cars, where tires got replaced one or two at a time.
Only three digits in the code?
Then the tire was made before 2000, per Edmunds. It's well over 25 years old. Take it off the car, spare included.
A Tire Age Chart for Florida Drivers
Match the age to the action. Ages count from the date code, as of October 2026.
| Age from date code | Made in | What I'd do in Orlando |
|---|---|---|
| Under 5 years | 2022 or later | Check pressure monthly and tread with a penny. Age isn't your problem yet. |
| 5 to 6 years | 2020 to 2021 | Have them looked at once a year, per Michelin. Start pricing a set. |
| 6 to 10 years | 2016 to 2020 | Replace, even with tread left. This is past what Ford, Nissan and Mercedes-Benz advise. |
| Over 10 years | Before 2016 | Replace now. That includes the spare. |
The years in the middle column overlap on purpose. A tire made in week 50 of 2020 is not six until December 2026.
Signs a Tire Is Aging Out Early
NHTSA is blunt that you can't spot tire aging just by looking. Edmunds notes the cracks form inside the tire too. But some outside signs mean the rubber is done, whatever the date says.
- Cracks in the sidewall or a web of fine lines down in the tread grooves.
- A bulge or bubble anywhere on the tire. That's a separation, and it can let go.
- Rubber that feels hard and glossy instead of slightly soft.
- A tire that keeps losing air with no nail in it.
- A new shake or hum at highway speed that wasn't there last month.
Tread still matters too. NHTSA says a tire is not safe at 2/32 of an inch. Put a penny in the groove with Lincoln's head upside down. If you can see the top of his head, it's time.
Questions Worth Asking
Is a tire from 2019 still good?
As of October 2026, a 2019 tire is about seven years old. That's past the six year mark several carmakers set. In Orlando I'd replace it, even with tread left.
Can you use 11 year old tires?
No. Michelin says replace at ten years from the date of manufacture, whatever the tread looks like. Discount Tire won't even work on a tire that old.
Does the spare tire age too?
Yes. Michelin's ten year rule includes the spare. NHTSA says spares are prone to aging because they seldom get replaced. It also says a full size spare should only be used in an emergency, not to replace a worn tire.
Can a Florida cop ticket you for old tires?
Not for the age. Florida has no yearly inspection and section 316.610 sets no tread depth number. It does let an officer with reasonable cause stop and inspect an unsafe car. Marginally worn tires get a written notice to fix them within 48 hours. Trooper Steve told News 6 it's hard to spot bald tires on a moving car, but once you're stopped, the officer can cite you on judgment. More on that in what Florida does and doesn't inspect.
Do new tires from the shop come with an old date?
They can. Tires sit in warehouses before they're sold. Read the date code before they're mounted, and ask for a newer set if the code is already a couple of years old.
Should I check tire age on a used car before I buy?
Yes, every time. A set of tires is a real cost, and old tires on a clean car are easy to miss. Tires are part of our pre-purchase inspection, along with brakes, suspension and fluids. Our mobile oil change includes a tire pressure check too.
If something else on the car needs a look, call Orlando's Finest Mobile Mechanic at (407) 490-4147. Mobile auto repair comes to your driveway, and you approve the price before any work starts.
Who Said So
- National Highway Traffic Safety Administration, Tires, as of October 2026
- NHTSA, Tire Aging, A Summary of NHTSA's Work, presentation slides hosted by Safety Research and Strategies
- Michelin USA, When to Replace Tires, Wear, Age, and Safety Signs, updated October 2026
- Ronald Montoya, Edmunds, How Old and Dangerous Are Your Tires?, January 24, 2024
- Discount Tire, Tire Lifespan and Aging, as of October 2026
- Florida Statutes, 316.610, Safety of Vehicle, Inspection
- Daniel Dahm, News 6 WKMG, Can You Be Ticketed for Driving on Bald Tires?, March 7, 2019
- NOAA Regional Climate Centers, Applied Climate Information System, daily highs for Orlando, Phoenix and Chicago, 2016 to 2025, as of October 2026