How to Store Tires Properly for Long Life

Why tire storage matters

Seasonal tire changes are common in regions with distinct winters. When you swap to winter tires, the summer set must be stored, and the reverse happens in spring. Improper storage can lead to premature aging, cracking, and flat spots, shortening the life of your tires. The U.S. Tire Manufacturers Association notes that modern tires are engineered to last longer, but that longevity depends on how they are cared for. Storing them correctly is a key part of that care.

If you are new to seasonal changes, review our guide on seasonal changeover and the effects of tire aging to understand how storage fits into the bigger picture.

Temperature and exposure: the right environment

Tires are made of rubber compounds that degrade when exposed to heat and ultraviolet (UV) light. High temperatures accelerate chemical aging, while ozone from electrical motors or generators can cause surface cracking. Choose a storage location that is cool, dry, and dark. A garage or basement that maintains a consistent temperature is ideal. Avoid areas with direct sunlight, heaters, or strong electric motors.

The federal definition of sidewall cracking (49 CFR 571.139) includes any parting that extends to cord material, a sign of serious degradation you want to prevent. If you notice cracks on your stored tires, it may be time to replace them. Learn more about sidewall crack checks and dry rot to recognize the signs.

Also consider the humidity. High humidity can promote mold and mildew on the rubber surface. Use a dehumidifier in a damp garage, or place a moisture barrier under the tires. Proper air circulation helps prevent moisture accumulation, so avoid sealing tires in airtight containers unless they are completely dry and you are sure they are free of moisture.

Stacking and positioning tires

How you stack tires matters. If tires are mounted on rims, store them standing upright on the tread. This avoids pressure on the sidewall. If they are unmounted, stack them flat on top of each other. In both cases, do not pile too many. The weight of a tall stack can distort the bottom tires, especially if they are inflated. A safe guideline is to stack no more than four or five tires high. If you stand them upright, check periodically that they are not leaning or developing flat spots.

For unmounted tires, you can also hang them on a wall using a proper tire rack, but ensure the rack does not exert point pressure on the sidewall. If you are storing tires with rims, consider placing them in a horizontal rack to avoid stress. Always keep them clean and dry before stacking to prevent any residue from sticking.

For more detailed tips on positioning and space, see our article on tire storage tips.

Managing air pressure for storage

Proper air pressure during storage prevents flat spots. A flat spot occurs when a tire sits in one position for a long time with insufficient pressure, causing the rubber to distort. The vehicle manufacturer's recommended cold inflation pressure is listed on a placard in the driver's side door jamb or in the owner's manual, as specified in Federal Motor Vehicle Safety Standard 571.110. Inflate tires to that pressure before storing. If your vehicle has a tire pressure monitoring system, note that FMVSS 571.138 requires a warning when pressure falls 25% below the recommended level, so check pressures periodically even during storage.

Some drivers choose to raise pressure slightly for long-term storage, but the manufacturer's recommendation is a safe starting point. Our basic tire pressure guide and storage pressure guide offer further detail.

Remember that temperature drops can lower pressure. In an unheated garage, pressure may decrease over the winter. Check and adjust pressure monthly. If you have a TPMS, use it to monitor, but do not rely solely on it while the tires are not mounted. A manual gauge is more accurate.

Cleaning and inspection before storage

Clean tires before storing to remove brake dust, oil, and road grime. These contaminants can break down rubber over time. Use mild soap and water, and let them dry completely. After cleaning, inspect each tire for signs of damage. Look for cracks, bulges, or cuts. The tread should show visible treadwear indicators, which are mandated by FMVSS 571.139 as projections in the principal grooves that give a visual indication of wear. If the tread is worn to these indicators, the tire needs replacement. Also check the sidewalls for deep cuts or bulges. Address any damage before storing, or consider replacing the tire.

A thorough inspection prevents installing a damaged tire later. For step-by-step guidance, see our articles on tire cleaning and care and measuring tread depth.

Record the DOT code from each tire's sidewall. This code indicates the week and year of manufacture. Tires should not be used beyond six years from the date of manufacture, regardless of tread depth. Checking the DOT code before storage and before reinstallation helps you decide if it is time to replace them. Learn more about reading tire DOT codes.

Long-term storage tips

Beyond the basics, a few extra steps help extend tire life during long-term storage:

Use a checklist to avoid mistakes:

• Keep tires in a cool, dry, dark place.
• Avoid placing them directly on concrete, which can wick moisture; use a mat, board, or pallet.
• If storing for more than a season, consider placing them in sealed plastic bags to reduce oxygen exposure.
• Mark the position (front, rear, left, right) if you rotate tires seasonally, so you can alternate wear patterns.
• Check pressure monthly and reinflate if needed, especially if temperatures drop.
• Keep them away from generators, motors, and other ozone sources.
• Periodically rotate the stack or reposition upright tires to prevent developing a set.

What to pick for your use

Questions

Should I store tires on rims or off?

It depends on space. Mounted tires can be stored upright on the tread; unmounted tires should be stacked flat. Both methods work if done correctly.

What is the ideal temperature for tire storage?

A cool, dry place away from direct sunlight and heat sources is best. Avoid extreme temperatures, as both heat and cold can accelerate aging.

How long can I store tires?

Tires have a service life, and storage time should not exceed the period indicated by the DOT code on the sidewall. Check the code before storing and before reusing.

Should I increase tire pressure before storing?

Yes, inflate to the vehicle manufacturer's recommended cold inflation pressure. This prevents flat spots. Check pressure periodically, especially if temperatures change.

Can I stack tires flat on the floor?

Yes, but do not stack too many, and avoid placing them directly on concrete if it is damp. Use a mat or board to protect the rubber.

How often should I check stored tires?

Plan to inspect stored tires at least once a month. Look for cracks, changes in pressure, and any signs of moisture. Monthly checks are especially important in fluctuating temperatures.

Can I use tire dressing or protectant on stored tires?

Avoid using solvent-based dressings before storage, as they may dry out rubber. If you want to apply a protectant, choose a water-based product and let it dry completely. Always clean tires first.