Tires & Wheels
Tire Storage And Flat-Spotting In Stored Cars
A car that sits develops a specific tire problem: flat spots, where the tire takes a set at the contact patch. On a stored collector car, preventing it is part of correct storage.
What flat-spotting is
When a car sits in one position for an extended time, the weight of the car presses the tire against the ground at the contact patch. The tire can take a temporary - or in severe cases permanent - set, felt as a vibration when the car is first driven. Modern tires are more resistant than older ones, and mild flat spots usually work out once the tires warm up with driving. Severe, long-term flat spots may not.
Preventing flat-spotting in storage
For shorter storage, slightly over-inflating the tires reduces flat-spotting. For long-term storage, the most effective options are to move the car occasionally so the contact patch changes, or to support the car on the manufacturer-recommended stands or cradles so the tires are unloaded. Always store on a moisture-barrier surface - bare concrete wicks moisture into the tire.
Storing wheels and tires off the car
Tires and wheels stored off the car - a winter set, an original set, a track set - should be kept clean, out of direct sunlight, away from ozone sources such as electric motors, and at moderate temperature. Mounted tire-and-wheel sets are best stored stacked flat or hung; unmounted tires are best stored upright. Label sets clearly, and keep original wheels and tires with the car's documentation.
How this affects resale value
A stored car that comes out with flat-spotted, vibrating tires signals storage that was not done correctly - and on a collector car, storage quality is part of the value story. Correct storage that prevents flat-spotting, plus current-dated tires, presents the car as properly preserved. Keep original wheels and tires; for a collector car they are part of the car and its provenance.
Frequently asked questions
Do tire flat spots go away?
Mild flat spots from shorter-term storage usually work out once the tires warm up with driving. Severe flat spots from long-term storage in one position may be permanent.
How do I prevent flat spots on a stored car?
Slightly over-inflate for shorter storage; for long-term storage, move the car occasionally or support it on recommended stands so the tires are unloaded. Always store on a moisture barrier.
How should I store an extra set of wheels and tires?
Clean, out of direct sun, away from ozone sources like electric motors, at moderate temperature. Mounted sets stacked flat or hung; unmounted tires upright. Label them and keep originals with the car's documents.
Related resources
- All tires & wheels guides
- How to value a luxury car
- Vehicle research library
- Submit your car for a private market read
Compiled by the Fast Auto Exit Network Research desk. General informational guidance; specific products and methods should be matched to your individual vehicle and confirmed with a marque specialist.
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