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How Long Do Spare Tires Last? Complete Lifespan Guide

  • Writer: Marko S.
    Marko S.
  • Dec 3
  • 3 min read

How Long Do Spare Tires Last?

Most drivers forget about their spare tire until they need it. But by the time a flat happens, the spare may already be too old, too damaged, or too dry-rotted to use safely. Even if a spare looks brand new, time and exposure can make it unsafe.


This guide explains how long spare tires last, what affects their lifespan, and how to keep your spare in safe, road-ready condition for years.


How Long Does a Spare Tire Actually Last?

Most spare tires last:

6 years (recommended)

Up to 10 years (absolute max)


Even if they’ve never been used, rubber breaks down over time due to:

  • Heat

  • Sunlight

  • Oxygen exposure

  • Moisture

  • Weather changes

  • UV radiation


This is why tire age matters just as much as tire tread.


Where to Find Your Spare Tire’s Age

Every tire has a date code stamped on the sidewall. It looks like:

DOT 2519

This means:

  • 25 → Week of the year

  • 19 → Year (2019)


If your spare is older than 6 years, it’s time to inspect it. If older than 10 years, it should be replaced immediately.


Why Spare Tires Age Faster Than Regular Tires

Spare tires actually degrade faster, even though they’re rarely driven on.

Here’s why:


They sit still

Tires stay healthier when they roll, flex, and heat up occasionally. Spare tires never move.


They are exposed to the elements

Especially rear-mounted spares on:

  • Jeep Wrangler

  • Ford Bronco

  • Toyota RAV4

  • Honda CR-V

  • FJ Cruiser

  • Hummer H2/H3

  • Land Rover

  • Suzuki/Isuzu SUVs


These tires absorb sun, rain, snow, and weather every single day.


They don’t receive regular maintenance

Most drivers forget to:

  • Check spare tire pressure

  • Clean the tire

  • Look for cracks


This speeds up aging dramatically.


Warning Signs That Your Spare Tire Is Too Old to Use

Replace your spare if you see:

  • Cracks in the sidewall

  • Faded or gray rubber

  • Hard, brittle texture

  • Exposed cords or fabric

  • Chunks of rubber missing

  • Tire that won’t hold air

  • Deep bead or tread cracks


A spare in poor condition is dangerous — even for short emergency use.


Can You Still Drive on an Old Spare?

You should not drive on a spare that is:

  • Over 10 years old

  • Showing signs of dry rot

  • Unable to maintain pressure

  • Visibly cracked

  • Stored uncovered for years

  • Exposed to extreme climates


Even temporary “donut spares” have lifespan limits.


How a Spare Tire Cover Extends Tire Life

A spare tire cover protects the rubber from all major causes of tire aging:

Blocks UV Radiation

UV rays are the #1 cause of dry rot.


Reduces Heat Exposure

Especially important for upright rear-mounted spares.


Shields Against Weather

Rain, snow, ice, and moisture cause rubber deterioration.


Prevents Dirt and Chemical Damage

Road salt, dust, and pollen all degrade rubber over time.


Preserves Tire Oils

The cover helps rubber retain natural oils that keep it flexible.


A USA-made SpareCover® can add years of usable life to your spare tire.


How to Make Your Spare Tire Last as Long as Possible

To maximize the life of your spare:

  1. Use a high-quality spare tire cover

  2. Check pressure every 3–6 months

  3. Read the date code and replace old tires

  4. Store indoors if vehicle sits long-term

  5. Avoid petroleum-based tire shine on spares

  6. Clean the spare occasionally


These simple steps prevent premature aging and ensure that your spare is safe when you need it.


When Should You Replace Your Spare Tire?

Replace the spare immediately if:

  • It’s over 10 years old

  • It has deep cracks

  • The rubber feels hard or brittle

  • It has obvious dry rot

  • It won’t hold air

  • It’s been exposed for years without a cover


Your spare must be 100% reliable. Don’t risk using one that might fail on the road.


Final Thoughts: Protect Your Spare Tire Before You Need It

Your spare tire is your emergency backup — and it’s only helpful if it’s in good shape.


Even unused spares can become unsafe due to age, sun, and weather. Using a high-quality SpareCover® keeps your tire protected and extends its lifespan dramatically.


If your spare isn’t covered, now is the perfect time to protect it. Browse SpareCover’s USA-made spare tire covers or use the sizing tool to get your perfect fit.

 
 
 

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