Seasonal Tire Changeover: Timing and Storage Tips

When to switch to winter tires

The right time to mount winter tires depends on your local climate and the tire types you have. In regions with real winters, a common rule of thumb is to switch before the first significant snowfall and when daytime temperatures are consistently cold. Winter tire compounds are designed to stay flexible at low temperatures and provide better traction on snow and ice. The industry emphasizes that proper tire selection is key to safe driving, and many drivers choose a dedicated set of winter tires for the coldest months. Check your vehicle owner's manual and any placard on the door jamb for the recommended tire size and inflation pressure, which may differ between summer and winter sets.

According to 49 CFR 571.139, a snow tire is one that attains a traction index of at least 112 on a medium-packed snow surface and is marked with an Alpine symbol. Look for that three-peak mountain snowflake on the sidewall when shopping for winter tires. If you live in an area with light snow, you might consider all-weather tires that carry the same symbol and can stay on year-round.

When to return to summer or all-season tires

Once the risk of freezing temperatures and snow has passed, it is time to consider switching back to summer or all-season tires. Driving on winter tires in warm weather can cause faster tread wear and reduce handling, because the softer compound was designed for cold conditions. A common practice is to swap when nighttime temperatures consistently stay above freezing.

If you mainly drive in urban areas with mild winters, you might simply keep all-season tires year-round. But for climates with severe winters, a dedicated set of summer tires in the warm months will give better grip and longer tread life. Always inspect the condition of your existing tires before making the switch, and consider replacing them if they are close to the end of their service life.

Preparing tires for storage

Before you store your off-season tires, clean them thoroughly to remove brake dust, road grime, and any chemicals that could degrade the rubber. Check for visible damage such as cuts, bulges, or embedded objects. If you notice any issues, consult the tire inspection guide for advice on whether the tire is safe to use in the future.

If you store tires with rims, keep them properly inflated to the recommended pressure. If you store them without rims, stand them upright and avoid stacking them flat, which can lead to distortion. Mark each tire's position on the vehicle with chalk or tape to help with rotation and even wear when you remount them.

Storage conditions

The ideal storage environment is cool, dark, and dry, away from direct sunlight, heat sources, and ozone-generating devices like electric motors. Ultraviolet light and ozone can accelerate rubber aging and cracking. Keep the tires clear of solvents, fuels, and petroleum-based products.

The Tire Industry Association recommends storing tires in sealed plastic bags or tire covers to minimize exposure to the elements, but allow some air circulation to prevent condensation. For more detailed advice, see the complete tire storage guide.

If your wheels are fitted with tire pressure monitoring system sensors, such as those required by 49 CFR 571.138, ensure the sensors are in good working order before storage, and keep them out of extreme temperatures when possible. A dead or damaged TPMS sensor can cause a warning light when you remount the wheels.

Storing on or off rims

How you store tires depends on whether they are mounted on rims. Tires on rims can be stacked horizontally or hung from the rim, but avoid placing heavy objects on top. Tires without rims should be stored upright and rotated periodically to prevent flat spotting.

Regardless of the method, it is wise to keep the storage area free of extreme temperature swings. A stable environment helps protect the rubber compound from degradation. If you have a second set of wheels, consider using a set of 4 tires guide to see how to care for them as a package.

Inspection before remounting

When the season returns, inspect each tire before mounting. Check tread depth, look for cracking, bulges, or any foreign objects. Verify the DOT date code to ensure the tires are not too old; tires have a limited service life even if tread remains. For guidance on reading the date code, see the tire DOT date code article.

Also, check the inflation pressure and have the tires balanced and rotated as needed. A proper inspection helps ensure your vehicle is safe and ready for the conditions ahead. If your tires show significant wear or age, you may need to invest in a new set; browse the winter tires or all-season tires guides for options that fit your vehicle.

It is also a good time to verify that your TPMS system is functioning correctly, as a low-pressure warning can help you catch under-inflation before it leads to poor handling or tire damage.

What to pick for your seasonal changeover

Questions

What is the best time to switch to winter tires?

Install winter tires before the first major snowfall and when temperatures consistently stay low enough that summer tires lose grip. Many drivers use the rule of thumb to switch when daytime highs fall below the point where the cold-hardened summer compound becomes less effective, often around the time overnight lows approach freezing.

Can I store tires in my garage?

Yes, a garage is often a suitable storage location if it is clean, dry, and not exposed to direct sunlight or extreme heat. Keep tires away from solvents, fuels, and ozone sources such as electric motors or welders. If you are unsure about the best conditions, follow the guidelines in the tire storage guide.

Should I store tires with or without rims?

Both methods are acceptable if done correctly. Tires on rims can be stacked or hung, while tires without rims should be stored upright and rotated periodically. Always inflate tires on rims to the recommended pressure before storage to avoid bead distortion.

How do I know when winter tires are no longer safe?

Check the tread depth: winter tires should have at least 6/32 inch of tread for safe snow performance. Also look for cracks, bulges, or signs of aging such as dry rot. Examine the DOT date code to see the tire's age, and replace any tire that is more than six years old or shows damage.