THE READY REPORT · DAILY INSTALL · NOVEMBER 10, 2026
You pull over with a flat and lift the floor of the trunk. The spare looks fine from above. That’s an awkward time to learn it has been losing air quietly for months.
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What’s happening now?
The National Weather Service is marking Winter Weather Preparedness Week in Illinois and Indiana. Federal winter-driving guidance says to check the air pressure in cold tires, including the spare if the car has one. Some cars carry a repair kit in its place.
Has this happened before?
What a dashboard light was built to catch
Illustrated reconstruction of the U.S. example.
In 2000, Congress passed the TREAD Act. One part called for a system that could warn a driver when a tire was well below its proper air pressure. Federal vehicle rules that followed made those warnings a familiar part of the dashboard in newer passenger vehicles.
A tire can lose pressure while it still looks round enough from a few feet away. A dashboard warning gives a driver a reason to pull out a gauge before guessing by sight. But the federal rule concerns the tires on the vehicle in normal use. It does not require a sensor in the spare while the spare is in storage.
That leaves an easy gap to miss. You can drive for months without a warning and still have an underfilled spare in the trunk. A compact spare can also call for a different pressure from the regular tires. The size of the tire, or the number on the door for the four road tires, will not necessarily tell you what the spare needs. That’s a job for the car’s manual or the spare’s specified pressure.
What happened next?
The dashboard warning brought one hidden condition into view. It still leaves some work for a person with a gauge. The federal safety agency advises checking tires by hand and checking the spare along with the tires on the road.
Start by finding out what came with the car. You may find a compact spare, a full-size spare, or a kit with an inflator. If someone else drives the car, they can learn where that equipment is from the same note.
A winter morning is a useful time to check a tire before driving warms it up. You can settle the pressure question in the driveway instead of trying to sort it out beside traffic.
The tire you’ll count on next may be the one the dashboard never checks.
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What can I do?
About 10 minutes. Use what you have. Keep the worksheet for your binder.
Use a gauge if you already have one. If the spare isn’t easy to reach, ask for a check the next time you’re at a tire shop.
Use the items you already have to make today’s check.
1. Open the manual and find out whether your car has a spare or a repair kit.
2. If there’s an accessible spare, compare its cold pressure with the maker’s specification.
3. Write down the reading or set a date to have it checked. Note where the equipment lives.
HOUSEHOLD RESILIENCE NETWORK · BINDER WORKSHEET
Check the Spare Before the Cold
Spare or kit
__________________
Reading or service date
__________________
Where to find it
__________________
Today’s win. You know what backup your car carries and whether there is a pressure check left to do.
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Jordan Davies
The Ready Report
P.S. Did you find a spare or a kit under the trunk floor? Hit reply and tell me. Forward this to the person who borrows your car.
P.P.S. Next from Survival Stronghold: Put a Warm Layer in the Car
Sources reviewed: NWS Chicago, Winter Weather Preparedness; NHTSA, Winter Driving Tips and Tire Pressure Monitoring System final rule.