How to Install a Trailer Spare Tire Mount: DIY Guide
Choose a trailer spare tire mount that matches your frame, then gather a carrier, bolts, wrench, socket set, and safety gear. Position it on the tongue or passenger side with at least 5 inches of ground clearance, mark the holes, and drill square to the surface. Bolt the carrier in place, add star washers and anti-seize, then tighten the spare tire evenly. Check for wobble, rust, and access, and you’ll see the finer details next.
Key Takeaways
- Choose a trailer-compatible spare tire mount for the tongue, frame, or wall, and place it on the passenger side if possible.
- Gather the correct carrier, bolts, washers, wrench, socket set, wheel chocks, and jack stands before starting installation.
- Mark the mounting holes carefully, check clearance, then drill square pilot holes to ensure proper alignment and fit.
- Secure the carrier with carriage bolts and star washers, tighten evenly, and use rubber pads to reduce vibration and wobble.
- Apply anti-seize to threads, confirm ground clearance and coupler access, then inspect regularly for rust and loose hardware.
[Products Worth Considering]
This universal spare tire mount carrier holder is built for utility trailers and boat trailers, offering a secure fit for 4, 5, and 6 lug wheels. It supports multiple bolt pattern sizes and a heavy-duty load capacity while resisting rust with a durable finish. The design allows easy installation and lets you choose the steel beam height for a better fit.
Secure a full-size spare on your trailer with this powder-coated steel spare tire mount bracket. It fits most 4-, 5-, and 6-lug wheel bolt patterns and mounts to trailer tongues up to 4 in wide and 5 in tall. Built for reliable carry with a max 150 lb load rating and includes zinc-plated hardware for straightforward installation.
This side-mounted U-bolt spare tire bracket helps keep a trailer spare wheel secure and protected while you travel. It supports trailer frames up to 2–3 inches wide and fits up to 15-inch tires for 4- or 5-lug wheels. The galvanized steel threaded carrier is built for long-lasting corrosion resistance and installs easily with included lug nuts and U-bolt.
Choose the Right Trailer Spare Tire Mount
Choosing the right trailer spare tire mount starts with matching the carrier to your trailer’s design and where you want the tire to sit.
To choose the right trailer spare tire mount, identify whether your trailer accepts a tongue, frame, wall, or rear-door carrier, because each style affects access and fit.
Identify whether your trailer accepts a tongue, frame, wall, or rear-door carrier for proper fit and access.
If you run an aluminum frame trailer, select a specialized carrier that isolates dissimilar metals and helps prevent corrosion. If your frame uses angle iron, a product like the CE Smith Spare Tire Carrier can suit the structure.
Place the spare toward the rear of the frame, ideally on the passenger side, so you preserve towing balance and reduce instability.
Also, verify that the mounted tire will still keep at least 5 inches of ground clearance to avoid scraping, impact damage, and debris strikes on rough roads.
Gather Tools for Installation
Before you start, gather the spare tire carrier, U-bolts, rubber pad, socket set, wrench, wheel chocks, and jack stands so you’ve got the core hardware and safety gear ready.
Use an impact wrench or ratchet for faster bolt tightening, and keep a drill with the correct bits handy if the mount needs holes.
Prep a level workspace, and have a helper nearby to position the tire and carrier safely.
Essential Tools
Gather the essential tools before you start: a trailer spare tire carrier, U-bolts, and a rubber pad to secure the tire, plus a socket set and wrench for tightening the hardware.
These essential tools let you mount the spare with proper clamping force and alignment. Keep wheel chocks in place so the trailer won’t roll while you work.
Use a jack stand to raise the frame and maintain safe clearance under the trailer. If your carrier uses threaded fasteners that need speed, an impact wrench can save time; otherwise, a standard ratchet gives you controlled tightening.
Verify that each tool fits the hardware before you begin, because mismatched sizes can round fasteners and slow installation.
Prep Your Workspace
Set up a clean, level workspace and lay out a wrench set, socket set, drill, and the correct drill bits for your mount’s hardware.
To prep your workspace, place carriage bolts, star washers, and the mount within easy reach so you don’t waste time searching mid-installation.
Put on gloves and eye protection before you begin. If the trailer can shift, support it with a jack stand to keep the frame stable while you drill and tighten hardware.
Keep a rubber pad nearby to shield painted or bare metal surfaces from scratches.
Using the right tools helps you work faster, align the mount correctly, and fasten it securely.
Check every item before starting so you can complete the installation safely and efficiently.
Mark the Best Mounting Spot
Choose a mounting spot on the trailer’s tongue or frame that gives the spare tire at least 5 inches of ground clearance, so it won’t hit road hazards. Place the spare tire mount on the passenger side if you can; it usually improves access and keeps the trailer balanced. Check that the spot won’t block cargo, wiring, or coupler movement, and make sure the load still tows smoothly. | Factor | Best Practice | Why It Matters |
| — | — | — |
|---|---|---|
| Ground clearance | 5+ inches | Prevents impact |
| Location | Tongue/frame, passenger side | Improves access |
| Weight balance | Slightly rearward | Boosts stability |
| Clearance | No payload interference | Protects cargo |
| Alignment | Keep level | Stops movement |
Mark the mounting holes with a center punch or marker after you confirm the spare tire mount sits square. Recheck the coupler proximity and trailer balance before you move on.
Drill and Bolt the Mount in Place
With the mount held in position, mark each hole location on the trailer tongue or frame so you can drill accurate pilot points.
Drill the marked holes to match the mount’s pre-drilled pattern, keeping the bit square to the surface for a proper fit.
Then insert the carriage bolts, add washers and nuts, and tighten them evenly to lock the mount in place.
Mark Mount Hole Locations
Once you’ve selected the mounting position, measure the location carefully so the spare tire mount sits at least 5 inches above the ground for proper clearance and access.
Hold the carrier against the trailer frame and use a level to confirm it’s square. Then mark mount hole locations with a marker, following the carrier’s specification exactly.
Check each mark twice before you drill; accurate layout prevents misalignment and keeps the tire stable on rough roads. If the frame has ribs, brackets, or welds, adjust the position slightly so the holes land on solid material.
Keep the marks visible and separate from any nearby hardware. Once you’re satisfied with the layout, you’re ready to drill pilot holes with the correct bit size in the next step.
Secure With Bolts
Drill each marked location with a bit that matches the mount’s pre-drilled holes, keeping the holes square so the carrier sits flush against the trailer frame.
Then test-fit the mount and select carriage bolts that pass cleanly through both parts without excess length.
Before final assembly, coat the threads with anti-seize to limit corrosion and make future removal easier.
Install a star washer under each nut or bolt head to improve bite and resist vibration loosening on rough roads.
Slide the hardware through the holes, then secure with bolts using a socket or wrench.
Tighten each fastener evenly until the mount draws tight against the frame, but don’t over-tighten; you can strip threads or distort the trailer metal.
Recheck alignment after tightening.
Mount the Spare Tire on the Trailer Tongue
Choose a spare tire carrier that matches your trailer type, tire size, and load capacity, then position it on the trailer tongue where it won’t interfere with the coupler or hitch.
Mark the tongue mounting points, double-check alignment, and drill clean holes so the carrier sits square and keeps the trailer’s weight distribution balanced.
Install the carrier with the supplied U-bolt kit, tightening the hardware evenly to clamp the tongue securely.
Keep the mount high enough to preserve at least 5 inches of ground clearance, which helps avoid impact damage from bumps and debris.
Next, fasten the spare tire with carriage bolts and star washers, and apply anti-seize compound to the threads so corrosion doesn’t lock the hardware later.
Finish by confirming the tire stays clear of the coupler, leaves the hitch accessible, and can be reached quickly in an emergency.
[Products Worth Considering]
Mount your spare tire directly to the inside wall of an enclosed trailer or garage to save space and keep your tire secure. This wall-mount spare tire carrier is designed for universal trailer tire fit and includes a fixed plate and chute for convenient screw replacement. Nylon insert hex lock nuts help prevent the tire from falling off, and wing hardware enables faster load and unload during maintenance.
This universal spare tire mount fits 4, 5, and 6 lug trailer wheels with bolt patterns from 4" to 5.5" and helps keep your tire securely locked in place. Its reinforced triangular structure with a sturdy behind plate is designed to handle up to 150 lbs, making it suitable for boat, camper, and RV spare tire mounting. The angled raised design reduces wind resistance and installation is straightforward with different length bolts and no drilling required.
The GADFISH spare tire carrier is built for reliable hauling with a reinforced welded triangular structure and a behind plate that securely holds the tire up to 150 lbs. It fits a wide range of trailer wheel lug setups, making it suitable for boat trailers as well, while the sloping design helps reduce wind resistance and provides low-ground clearance. Installation is designed to be straightforward with different length bolts and no drilling required.
Check Ground Clearance and Access
Keep the spare tire at least 5 inches above the ground so it won’t strike road debris, bumps, or uneven terrain.
To check ground clearance, measure from the lowest point of the mounted tire to the pavement with the trailer unloaded, then repeat after you add gear. If the axle sits high, confirm the tire still clears dips, curb cuts, and rough grades.
Mounting the spare on the passenger side usually gives you better access while keeping it out of the trailer’s working area. Make sure the bracket doesn’t block the axle, suspension travel, or other nearby components.
Recheck clearance during installation and again after loading, since cargo weight can reduce ride height. If the tire sits too low, adjust the mount before you travel.
A properly placed spare stays reachable, avoids interference, and keeps your trailer functional on the road.
Secure the Spare Tire to the Carrier
Position the spare tire on the carrier so the wheel holes line up cleanly with the mount’s studs, and verify it still maintains at least 5 inches of ground clearance.
Once aligned, secure the spare tire to the carrier with carriage bolts and star washers, tightening each fastener evenly so the wheel seats flat against the mount.
Secure the spare tire with carriage bolts and star washers, tightening evenly so the wheel seats flat against the mount.
Apply a small amount of anti-seize compound to the bolt threads before installation; this helps prevent corrosion and makes later removal easier.
Use the correct wrench size and tighten the hardware firmly, but don’t overtighten it enough to damage the studs or distort the wheel.
After everything’s snug, grasp the tire and shake it gently to confirm it doesn’t shift on the carrier.
If you feel movement, recheck the bolt tension and alignment.
This final inspection guarantees the spare stays firmly attached during transit and remains ready for use.
Fix Wobble, Clearance, and Rust Issues
If the spare tire mount still wobbles after installation, make sure it’s fastened to the trailer with carriage bolts and star washers. Then add rubber pads between the mount and frame to damp vibration and reduce wear.
To fix wobble, recheck every fastener for proper torque and confirm the carrier sits flush against the frame. Keep at least 5 inches of ground clearance so the tire won’t strike bumps, curbs, or debris. If clearance remains tight, move the mount farther back on the frame to improve weight distribution and towing stability.
Inspect all metal parts for rust or corrosion, especially on aluminum frame trailers, because moisture can attack threaded connections and weaken the assembly. Apply anti-seize to the bolts before reassembly to protect the threads and make future removal easier.
After installation, inspect the mount regularly and address any movement early to prevent wear, noise, and mounting failure on the road.
Frequently Asked Questions
How to Make a Spare Tire Holder for a Trailer?
You’ll build a trailer spare tire holder by choosing sturdy Holder Materials like steel or aluminum, welding or bolting a tongue or frame mount, adding carriage bolts, star washers, and keeping 5 inches ground clearance.
Can I Mount Trailer Tires Myself?
Absolutely, you can mount trailer tires yourself, and it’s hugely important for Tire Safety. You’ll need the right mount, U-bolts, tools, and clearance. Secure it firmly, check stability, and prevent corrosion.
What Are the Different Types of Trailer Spare Tire Mounts?
You can choose tongue, frame, wall, tailgate/rear, or undercarriage Mounting Options. You’ll match the carrier to your trailer, balancing access, cargo space, weight distribution, and corrosion resistance for reliable spare-tire storage.
Where Is the Best Place to Mount a Spare Tire on a Trailer?
Like a well-balanced load, you should mount your spare tire on the trailer tongue for best Tire Accessibility, secure fit, and cargo space. If that won’t work, place it rear passenger-side with clearance.
Conclusion
You’ve now installed your trailer spare tire mount, and the result should be solid, accessible, and road-ready. If you were worried that a tongue mount would reduce clearance or shift weight too much, test that theory by checking bounce, steering feel, and hitch access after a short tow. Tighten all hardware, recheck for wobble, and inspect for rust regularly. A secure spare carrier keeps your tire handy when you need it most.
[Products Worth Considering]
Mount your spare tire off the floor and onto your wall using an e-track spare tire carrier that helps you stay organized in trailers, garages, and warehouses. The upgraded double-fittings design improves stability versus single-fittings and supports greater load bearing. Install by snapping into e-track anchor points and securing the tire with a lug-nut style bolt setup for quick, secure storage.
The SEESII cordless impact wrench delivers high tightening and loosening power for fast wheel bolt and industrial bolt work. Its brushless motor and variable-speed 3 forward/2 reverse modes help you control precision installs and stubborn nut removal. A dual-battery system with rapid charging and an included storage case make it ready for home, car, and jobsite use.
The Dr.Roc spare tire tool kit helps you release, lower, or raise your spare tire with reliable extension tools and a lug nut wrench. It is made from rustproof automotive-grade steel and includes an organized carry case for convenient storage. Designed for compatibility with select GM models from the late 1990s through 2019, it uses upgraded extension components to install and remove spare tires with less hassle.
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