Spare Tire for Jeep Wrangler: Ultimate Guide to Choosing the Best
Reading Time: 8 minutes Jeep Wranglers are famous for adventure, off-roading, and exploring tough terrain. But even the best tires can get damaged on the trail or highway. That’s why having a spare tire for Jeep Wrangler is not just smart—it’s essential. If you’re a beginner to Jeeps or off-roading, understanding spare tires might seem simple. However, there are key details, choices, and maintenance steps that can make a big difference when you need it most.
Why Jeep Wranglers Need A Spare Tire
Jeep Wranglers are built for rough conditions. Rocks, mud, and potholes can quickly damage a tire. A spare tire means you can keep going, even after a flat. Unlike many cars, Wranglers often travel far from help, so waiting for roadside assistance isn’t always practical.
- Off-road risks: Trails can hide sharp rocks, sticks, or deep ruts.
- Remote travel: Help may be hours away.
- Peace of mind: You travel with confidence, knowing you’re prepared.
Jeep Wranglers usually mount the spare on the back tailgate, making it easy to access. But not all spares are created equal. Understanding the types and choices will help you pick the right one.
Types Of Spare Tires For Jeep Wrangler
Not all spare tires are the same. The right spare can depend on your Wrangler model, how you drive, and where you go.
1. Full-size Spare
Most Jeep Wranglers come with a full-size spare tire. This is a tire that matches the size and tread of your main four tires.
Benefits:
- You can drive at normal speed and distance.
- No need to change all tires after using the spare.
- Best for off-road and long trips.
Downsides:
- Heavy and takes up space.
- More expensive than compact spares.
2. Temporary Or Compact Spare
Some drivers use a temporary spare (also called a “donut”). These are smaller and lighter.
Benefits:
- Saves space and weight.
- Cheaper option.
Downsides:
- Limited speed (usually under 50 mph).
- Short driving range (often 50-70 miles).
- Not safe for off-roading.
3. Matching Off-road Spare
If you use larger tires for off-roading, your spare needs to match. For example, if you have 35-inch mud tires, your spare should also be a 35-inch mud tire. Mismatched tires can damage your Jeep’s drivetrain.
4. No Spare (tire Repair Kit)
Some people choose not to carry a spare, using a tire repair kit or sealant instead. This is risky on a Jeep Wrangler, especially off-road. Repair kits work for small punctures, but not for big cuts or sidewall damage.
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How To Choose The Right Spare Tire
Choosing the right spare tire for Jeep Wrangler depends on your driving habits and setup.
Consider Your Tire Size
Check your Wrangler’s main tire size. The spare should match in:
- Diameter
- Width
- Tread pattern
A different size can stress the transmission or suspension, especially with 4×4 engaged.
Wheel Compatibility
Your spare needs the same bolt pattern and offset as your main wheels. If you upgrade your wheels, upgrade the spare as well.
Terrain And Use
- Daily driving: A full-size or compact spare may work.
- Off-roading: Always carry a matching full-size spare.
- Winter or sand: Use a spare that matches your main tire’s tread for safety.
Weight And Carrier Strength
Larger spares are heavier. Stock tire carriers can usually hold up to a 33-inch tire. Bigger tires may need a reinforced tire carrier to avoid tailgate damage.
Practical Example
If your Wrangler uses 285/70R17 tires, your spare should be the same size. If you switch to 35-inch tires, upgrade your spare and tire carrier.
How To Mount And Store Your Spare Tire
Most Jeep Wranglers have the spare mounted on the rear tailgate. This setup is convenient, but there are important points to remember:
- Check that the spare tire carrier is strong enough for your tire size.
- Make sure the tire is tightly secured to avoid rattling.
- Keep the lock or anti-theft device if you park in public places.
Upgrading The Tire Carrier
If you use larger tires, the stock carrier may not be strong enough. An aftermarket tire carrier or reinforcement plate can help. These upgrades prevent damage to the tailgate and keep the spare secure.
Mounting Accessories
Some drivers add tools to the spare tire mount, like:
- High-lift jack
- Fuel can mount
- Backup camera relocation bracket
These can be useful, but add weight. Balance your needs for safety and convenience.
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Common Problems And How To Avoid Them
Many beginners overlook important details with their Jeep’s spare tire. Here are common mistakes and how to avoid them:
Mismatched Tires
Using a spare with a different size or tread can cause:
- Vibration
- Uneven wear
- Drivetrain damage (especially in 4WD)
Tip: Always match the spare to your main tires.
Old Or Unused Spare
Spare tires can age and crack even if never used. Rubber dries out over time.
Tip: Check the spare’s age and condition every few months. Replace if over 6-8 years old, even if it looks unused.
Low Tire Pressure
Spare tires lose air slowly. Many people forget to check.
Tip: Check spare tire pressure every oil change. Most spares need 35 psi, but check your owner’s manual.
Weak Tire Carrier
Oversized spares can bend or break the stock carrier or tailgate.
Tip: Upgrade the carrier if your spare is larger than stock.
Spare Tire Data: Size And Weight Comparison
Here is a comparison of common Jeep Wrangler spare tire sizes and their weights. This helps you plan for upgrades and carrier strength.
| Tire Size | Weight (approx.) | Fits Stock Carrier? |
|---|---|---|
| 255/75R17 (Stock) | 45 lbs | Yes |
| 285/70R17 | 55 lbs | Yes |
| 315/70R17 (35″) | 70 lbs | No (Needs upgrade) |
| 37×12.50R17 | 85 lbs | No (Upgrade required) |
Note: Carrier upgrades are recommended for tires above 33 inches.
Credit: nomadoverlandadventures.com
How To Change The Spare Tire On A Jeep Wrangler
Changing a flat with your spare is straightforward, but beginners often miss key steps.
Step-by-step Guide
- Park safely. Move to a flat, stable area.
- Turn on hazard lights.
- Loosen lug nuts on the flat tire (but do not remove).
- Jack up the Jeep using the proper jack point.
- Remove lug nuts and take off the flat tire.
- Mount the spare and hand-tighten lug nuts.
- Lower the Jeep and tighten lug nuts in a star pattern.
- Check tire pressure on the spare.
- Drive carefully and check lug nuts after a few miles.
Practical Tips
- Always keep a lug wrench and jack in your Jeep.
- If you have aftermarket wheels, keep the correct socket or key for locking lug nuts.
- Practice changing the tire at home before you need to do it on the trail.
Maintenance And Care For Your Spare Tire
A spare tire is only useful if it’s ready when you need it. Regular checks keep your spare safe and reliable.
What To Check
- Tire pressure: At least every oil change.
- Tread wear: Should match your main tires.
- Rubber condition: Look for cracks, bulges, or dry rot.
- Mounting bolts: Tighten if loose.
Replacing Old Spares
If your main tires wear down or you change to a new size, include the spare in the rotation. Don’t let your spare become an old, mismatched tire.
Example Of Neglected Spare
A Wrangler owner with a 10-year-old spare discovered his “like-new” tire had cracks and was unsafe. He replaced it before a long trip, avoiding a possible blowout.
Cost Of Spare Tires And Accessories
Spare tire cost depends on the type, size, and brand. Here’s a typical breakdown:
| Item | Price Range | Notes |
|---|---|---|
| Full-Size Spare Tire | $150–$350 | Matches main tires |
| Spare Wheel (Rim) | $80–$200 | Steel or alloy |
| Reinforced Tire Carrier | $100–$400 | For larger tires |
| Locking Lug Nuts | $20–$60 | Anti-theft |
| Temporary Spare | $70–$120 | Limited use |
Tip: Always budget for a matching spare when upgrading tires.
Legal And Safety Considerations
Carrying a spare tire is not just practical—it can be required by law in some places. Driving off-road without a spare may also void your off-road insurance or trip coverage.
Safety Facts
- Driving on a donut spare at high speed is dangerous.
- Mismatched spares can cause loss of control in slippery conditions.
- Many Jeep clubs and events require a full-size spare for group runs.
Non-obvious Insights For Beginners
- Balance the spare. Even spares should be balanced like your main tires. An unbalanced spare can cause shaking and wear.
- Include the spare in tire rotation. Rotating your spare with your main tires (if the pattern allows) helps it wear evenly and stay in good condition.
- Check tailgate hinges. The extra weight of a large spare can wear out tailgate hinges over time. Inspect for sagging or loose hinges, especially after adding bigger tires.
When To Replace Your Spare Tire
- Age: Most experts recommend replacing tires every 6-8 years, regardless of tread.
- Damage: Replace if you see cracks, bulges, or cuts.
- After use: If you use the spare for a long trip, repair or replace it soon.
Where To Learn More
For advanced information about tire standards, check the Tire Code page on Wikipedia.
Frequently Asked Questions
What Size Spare Tire Should I Get For My Jeep Wrangler?
Always choose a spare tire that matches the size and type of your four main tires. Mixing sizes can damage your drivetrain, especially in four-wheel drive.
Can I Use A Smaller Spare Tire Just To Get Home?
A smaller “donut” spare is not recommended for Jeep Wranglers, especially for off-roading. Use only for very short, emergency road use, and drive slowly.
How Often Should I Check My Spare Tire?
Check your spare tire’s pressure and condition at least every oil change (about every 3,000-5,000 miles). Look for cracks, damage, and correct pressure.
Do I Need A Special Tire Carrier For Larger Tires?
If your spare is bigger than 33 inches, upgrade to a reinforced tire carrier. This prevents damage to your Jeep’s tailgate and keeps the spare secure.
Is It Okay To Use My Old Stock Tire As A Spare After Upgrading Wheels?
No. Your spare should match your new tire size and wheel pattern. Using a mismatched spare can cause drivetrain problems and may be unsafe.
A spare tire for Jeep Wrangler is more than just a backup—it’s a key part of safe adventure and everyday driving. Choose the right spare, maintain it well, and you’ll be ready for any road or trail ahead. With the right knowledge and a little preparation, you’ll never be left stranded.
