The 2018 Jeep Compass stores its spare tire under the cargo floor, which limits space but keeps the tire protected from the elements. If you own a Jeep Compass 2018 spare tire access can be tricky, especially when you need it fast. This guide covers everything from locating the spare to replacing it and upgrading options.
Knowing where your spare is and how to use it saves time and stress. The 2018 model has a compact spare, not a full-size one. Let’s walk through the details step by step.
Jeep Compass 2018 Spare Tire Location And Access
The spare tire sits under the cargo area floor in the back. You lift the panel to get to it. This design keeps the tire clean and out of sight.
To access the spare, first open the rear liftgate. Then remove any cargo or mats covering the floor panel. You’ll see a plastic cover with a handle or latch.
Steps To Remove The Cargo Floor Cover
- Open the rear liftgate fully.
- Clear out items from the cargo area.
- Locate the plastic cover near the back edge.
- Pull up on the handle or release the latch.
- Lift the panel and secure it with the prop rod (if equipped).
Underneath, you’ll find the spare tire secured with a bolt or wing nut. The jack and tools are stored nearby in a foam tray. Check that all pieces are present before you need them.
What Tools Are Included
- Scissor jack
- Lug wrench
- Towing eye bolt
- Jack handle extension
Some models also include a tire inflator kit instead of a spare. Verify your vehicle’s setup. The tools are usually wrapped in a bag or placed in a cutout.
Spare Tire Size And Specifications
The 2018 Jeep Compass uses a temporary spare tire. It’s smaller than the regular tires to save space and weight. The exact size is T135/80R17 or T135/90R16, depending on your trim.
This spare is only for short-term use. Maximum speed is 50 mph. Driving on it for long distances can damage the drivetrain. Replace it with a full-size tire as soon as possible.
Full-Size Spare Compatibility
If you want a full-size spare, you can fit one under the cargo floor. But it will raise the floor panel slightly. Some owners remove the foam tray to make room.
Check your wheel bolt pattern: 5×110 mm. The offset is around 40-45 mm. A full-size spare from a 2018 Compass or similar Jeep model works fine.
How To Change The Spare Tire On A 2018 Jeep Compass
Changing a flat tire is straightforward with the right steps. Safety first: park on a level surface and engage the parking brake. Use wheel chocks if available.
Step-By-Step Tire Change Process
- Remove the spare tire and tools from the cargo area.
- Loosen the lug nuts on the flat tire slightly (do not remove them yet).
- Position the jack under the vehicle’s jacking point (near the flat tire).
- Raise the vehicle until the flat tire is off the ground.
- Remove the lug nuts completely and pull off the flat tire.
- Mount the spare tire onto the wheel studs.
- Tighten the lug nuts by hand in a star pattern.
- Lower the vehicle and torque the lug nuts to 100 ft-lbs.
- Store the flat tire and tools back in the cargo area.
Always check the spare tire pressure before driving. The recommended pressure is 60 psi for temporary spares. Low pressure can cause handling issues.
Jacking Points And Safety Tips
The jacking points are marked on the underbody near each wheel. Look for small notches or arrows. Never jack under the control arm or floor pan.
Use the jack only on solid ground. If the road is soft, place a board under the jack base. Do not crawl under the vehicle when it’s on the jack.
Spare Tire Maintenance And Care
Your spare tire needs occasional checks. Even if never used, rubber degrades over time. Inspect it every six months for cracks or dry rot.
Check the air pressure monthly. Temporary spares lose pressure faster than regular tires. Keep it at 60 psi for best performance.
When To Replace The Spare
- If the tread depth is below 2/32 inch
- If there are visible cuts or bulges
- If the tire is older than 6 years (check date code)
- If it has been used for an emergency and driven over 50 miles
You can buy a replacement spare from Jeep dealers or tire shops. Online retailers also sell compatible units. Make sure the size matches your original.
Upgrading To A Full-Size Spare Tire
Many owners prefer a full-size spare for long trips or off-roading. The 2018 Compass can accommodate one with minor modifications. You’ll need to remove the foam tray and possibly adjust the floor panel.
What You Need For A Full-Size Spare
- Full-size tire and wheel (same as your other four)
- Ratchet strap or bracket to secure it
- Possible removal of the cargo floor cover
Some aftermarket companies sell spare tire carriers that mount on the rear door or bumper. This keeps the cargo area clear. But it adds weight and may affect rear visibility.
Pros And Cons Of Full-Size Spare
Pros: No speed limit, can be used as regular tire, better off-road capability.
Cons: Takes up cargo space, heavier, may require modifications.
If you off-road often, a full-size spare is worth the trade-off. For city driving, the temporary spare is fine.
Common Issues With The 2018 Jeep Compass Spare Tire
Some owners report that the spare tire compartment collects water. This can happen if the cargo floor seal is damaged. Check for moisture after heavy rain.
Another issue is the jack slipping or not fitting properly. The scissor jack can be unstable on uneven ground. Practice using it before an emergency.
Solutions To Common Problems
- Water in compartment: Dry it out and replace the seal.
- Jack instability: Use a jack pad or board.
- Tools missing: Buy a replacement kit from Jeep or aftermarket.
If your spare tire is stuck due to rust, apply penetrating oil to the bolt. Let it sit for 10 minutes before trying to loosen it.
Aftermarket Spare Tire Options
You can replace the factory spare with a better one. Options include a full-size wheel and tire, or a higher-quality temporary spare. Some brands offer lighter weight spares for better fuel economy.
When choosing an aftermarket spare, match the load rating and diameter. The rolling circumference should be within 3% of your other tires. Otherwise, the vehicle’s ABS and stability control may malfunction.
Recommended Aftermarket Brands
- Mopar (OEM replacement)
- Goodyear (temporary spares)
- BFGoodrich (full-size off-road spares)
- Continental (compact spares)
Always verify compatibility with your 2018 Jeep Compass trim level. Sport, Latitude, and Trailhawk models may have different wheel sizes.
Frequently Asked Questions
Does The 2018 Jeep Compass Have A Spare Tire?
Yes, most 2018 Jeep Compass models come with a temporary spare tire under the cargo floor. Some trims may have a tire inflator kit instead.
What Size Is The Spare Tire On A 2018 Jeep Compass?
The spare tire size is typically T135/80R17 or T135/90R16, depending on the trim. Check your owner’s manual for exact specs.
Can I Put A Full-size Spare In My 2018 Jeep Compass?
Yes, you can fit a full-size spare under the cargo floor, but it may raise the floor panel. You might need to remove the foam tray.
How Do I Remove The Spare Tire From A 2018 Jeep Compass?
Open the rear liftgate, lift the cargo floor cover, and unscrew the bolt or wing nut holding the spare in place. Then lift it out.
Is The 2018 Jeep Compass Spare Tire The Same As Other Jeep Models?
No, the bolt pattern is 5×110 mm, which is different from larger Jeeps like the Wrangler (5×127 mm). Always check compatibility.
Final Thoughts On The 2018 Jeep Compass Spare Tire
Your 2018 Jeep Compass spare tire is a reliable backup when you need it. Keep it properly inflated and check the tools regualrly. If you drive off-road or take long trips, consider upgrading to a full-size spare.
Knowing how to access and change the spare saves you time and money. Practice the steps at home so you’re ready for a real flat. The spare tire system is simple but effective for most situations.
Remember that the temporary spare is not a permanent solution. Replace it with a regular tire as soon as you can. This keeps your Compass safe and drivable.
If you have any issues with the spare tire compartment, address them quickly. Water or rust can make the spare unusable. A little maintenance goes a long way.
For more details, consult your owner’s manual or a Jeep dealership. They can provide specific part numbers and installation tips. Your 2018 Jeep Compass spare tire is a small but important part of your vehicle’s emergency kit.
Take care of it, and it will take care of you on the road. Happy driving, and stay safe out there.