Running without a properly mounted spare on an overland trail is a gamble I stopped taking after my second flat in the backcountry. A spare tire rattling around in the truck bed is not a recovery strategy - it is a flat waiting to become a trip-ender. I have found that most rigs can get a solid spare tire mount installed for $50-200 depending on the vehicle and setup, and the install is well within DIY territory for a weekend afternoon. Here is how to do it right without overspending.

Safety Note: A spare tire carrier places significant dynamic load on your bumper or hitch receiver, especially on rough trails. Always torque mounting hardware to spec and re-torque after the first 50 miles of trail use. Check your vehicle’s bumper weight rating and hitch tongue weight rating before bolting on a full-size spare - a 35-inch mud tire can weigh 65-75 lbs, and that load multiplies on washboard roads. If you have any doubt about your bumper’s structural integrity, consult a fabricator before proceeding.

Why a Mounted Spare Actually Matters

Most overlanders understand that a spare tire is non-negotiable. What fewer people think about is where that spare lives. If you are running a full-size spare - which I strongly recommend over a temporary “donut” for trail use - you need a mounting solution that keeps it accessible, secure, and out of the way of your gear.

A spare thrown in the bed works until you are packed for a five-day trip and the spare is buried under your camp kitchen and sleeping kit. When I built out my first overland rig as part of a full overland build under $2,000, a proper spare mount was one of the first things I tackled - because everything else depended on having that access sorted.

Types of Spare Tire Mounts

Not every mount works for every vehicle. Here is what is available and where each option fits.

Rear Bumper Bracket Mounts

These bolt directly to your existing rear bumper, typically using existing holes or simple self-tapping hardware. They hold the spare vertically against the back of the bumper. I have used these on a Tacoma and a 4Runner, and for a tire up to about 33 inches, a good bracket kit holds the spare solidly.

Cost: $40-120 depending on vehicle fitment and brand. This is the most budget-friendly option and works well if you are running factory or mildly upgraded rear bumpers.

Swing-Away Tire Carriers

These mount to the rear bumper (or a purpose-built bumper) and allow the carrier arm to swing out to access your cargo area without removing the tire. They are more expensive at $150-500, but the convenience factor is real if you are loading and unloading gear at camp regularly.

For budget builds, I recommend holding off on a swing-away unless you are also replacing the bumper. A swing-away carrier on a factory stamped-steel bumper is asking for trouble - the lateral force on an arm that long can crack factory bumper mounting points.

Bed-Mounted Options for Trucks

Truck owners have the option of mounting a spare on a bed rail or cab rack. This keeps the weight forward and centered, which is better for handling. The tradeoff is accessibility - you are climbing into the bed to retrieve the spare, and it eats into your cargo space.

Bed-mounted systems run $80-200 and are worth considering if you have a truck-based rig with a significant overland kit in the bed already.

Hitch Receiver Carriers

A hitch-mounted spare carrier drops into your 2-inch receiver and holds the tire at the rear of the vehicle. These are universal-fit, easy to install, and easy to remove. I have used one of these as a temporary setup and they work - but they do put all the weight outside the frame rails, which makes the vehicle feel twitchy on rough terrain at speed. Reserve this option for lighter tires (under 60 lbs) or as a temporary solution.

Hitch carriers run $60-150 and are the most transferable option if you switch vehicles.

What Size Spare Do You Actually Need?

Match your spare to your mounted tires. Running a full-size matching spare means you can rotate it into your regular tire set, extending the life of the set and keeping your tread even. If you are running 33x12.50R15 tires, your spare should be the same.

I have seen rigs running a different-size spare “just in case,” and it is better than nothing - but for technical trail use, a mismatched spare creates handling issues and can stress your differential if you run it for more than a few miles. The right answer is to spec your tires knowing your spare needs to match. When you are choosing tires, my rundown of budget all-terrain tire options covers which brands offer the best value when buying a full set of five.

Budget Mounting Options That Actually Hold Up

Here is where to spend your money based on what your rig and tires actually need.

Under $100: Basic Bumper Bracket Kits

For tire sizes up to 33 inches on a factory bumper, a basic bracket kit is all you need. These bolt to existing bumper hardware and hold the spare vertically. In my experience, look for a kit that uses at minimum 3/16-inch steel plate and comes with grade-8 hardware - cheap kits use undersized bolts that work loose within a season.

A quality bracket kit in the $60-90 range will serve a weekend-warrior overlander well for years. Check fitment guides carefully - most are vehicle-specific, and a Tacoma bracket will not fit a Tundra even though the bumpers look similar.

A spare tire carrier bracket in the $60-100 range covers most popular overland platforms and is the most cost-effective starting point.

$100-250: Mid-Range Carriers

In this price range you start getting heavier steel, better finish (powder coat vs. raw steel), and options for larger tire sizes up to 35 inches. Some mid-range carriers also include a tire lock, which is worth having if you park in trailheads or populated campgrounds.

I spent $145 on a mid-range carrier for my current rig and it has held a 33-inch tire without any movement or noise for two full seasons. That is the sweet spot for most budget builds.

Step-by-Step: Installing a Bumper Spare Tire Bracket

This process covers a basic bolt-on bumper bracket. A swing-away installation is similar but includes an additional pivot pin step - follow your specific kit instructions for that.

Tools needed: 1/2-inch drive ratchet, socket set (metric and standard), torque wrench, jack stands, penetrating oil if hardware is rusty.

Step 1: Dry-fit before torquing. Hand-thread all hardware before tightening anything. Make sure the bracket sits flush against the bumper and that the tire mount plate is vertical. Shimming is common - most kits include flat washers for this.

Step 2: Mount the spare to the carrier plate first. It is easier to center the tire on the carrier plate on the ground than with it bolted to the vehicle. Use your lug nut pattern to align the carrier studs, then hand-tighten the lug nuts.

Step 3: Bolt the carrier to the bumper. With a helper, hold the carrier in position and run the bolts in hand-tight. Then torque to spec in a cross pattern. Typical spec for 3/8-inch grade-8 bolts is 30-35 ft-lbs - check your kit’s documentation.

Step 4: Torque the spare to the carrier. Lug nuts on the carrier studs typically torque to 80-100 ft-lbs. Use a proper torque wrench here - over-tightening can crack the carrier plate welds on cheaper kits. A reliable 1/2-inch drive torque wrench is a tool you will use constantly if you are doing your own build work, and decent ones start around $35.

Step 5: Check clearance. Open your tailgate or rear hatch and verify the spare does not contact the vehicle. On some bumper setups, the spare needs to sit 1-2 inches further outboard - most kits include a spacer for this.

Step 6: Re-torque after 50 miles. This is not optional. Vibration settles hardware, especially on new installs. Mark your lug nuts with a paint pen after final torque so you can see if anything has moved.

Keeping the Spare Secure: Anti-Rattle Tips

A loose spare is loud, annoying, and can cause damage. If you are getting rattle from a freshly installed carrier, the most common culprit is the interface between the tire and the carrier plate. A 1/4-inch rubber gasket between the tire and plate eliminates most metal-on-metal contact.

For lug nut loosening, I recommend an anti-rattle lug nut kit that includes lock washers or nylon-insert hardware rated for the load. Standard open-end lug nuts will vibrate loose on rough terrain - I learned that the hard way on a Forest Service road with corrugations bad enough to shake fillings loose.

Tire Weight and Your Vehicle’s Limits

This is worth repeating because I have seen it go wrong. A full-size 35-inch tire in a steel wheel can weigh 80+ lbs. That weight sitting 18-24 inches behind your rear axle adds leverage that your bumper mounts may not be designed for.

The overlanding community at Expedition Portal maintains vehicle-specific threads on bumper ratings and carrier loads that are worth reading before you commit to a setup, and you should always cross-reference your vehicle’s rear bumper attachment points with the carrier manufacturer’s rated capacity. Exceeding that rating is how you end up with a spare dragging on the highway.

For most trucks and SUVs running tires up to 33 inches on stock or mild bumpers, you are fine with a standard bracket kit. When you get to 35s, be honest about whether your bumper - and the steel behind it - is up to the job.

FAQ

Can I mount a full-size spare on a factory bumper?

For most mid-size trucks and SUVs (Tacoma, 4Runner, Wrangler, FJ Cruiser), yes - factory bumpers on these platforms are designed with spare tire loads in mind. Verify your specific model. On lighter unibody vehicles, factory bumpers may not be rated for a full-size tire load and you may need a purpose-built aftermarket bumper.

What is the cheapest way to mount a spare on a Jeep Wrangler?

The Wrangler already has a factory swing-away carrier, so most owners just need to spec their spare to match their tire size. If you are upgrading to larger tires, you may need an extended carrier arm ($80-150) to clear wider tires. This is one case where the budget solution is already built in.

How do I stop my spare from rattling on the trail?

Use a rubber gasket between the tire and carrier plate, and torque lug nuts to spec with lock washers. Re-torque after the first trail run. If rattle persists, check whether the bracket itself is moving against the bumper - a loose bracket-to-bumper connection is harder to diagnose but more common than people realize.

Do I need a lock on my spare tire?

In most dispersed camping and trailhead situations, a basic cable lock through the tire is enough deterrent. Full locking carrier systems add $30-60 to the cost but are worth it if you regularly park at busy urban trailheads overnight.

Can I run a different brand spare if the size matches?

Yes, as long as the diameter, width, and load rating match your mounted tires. Running a different tread pattern spare is fine for the short distances you will use it before getting to a shop. Your rig will not handle identically, so drive cautiously and avoid high-speed highway driving on a mismatched spare.

A proper spare mount pairs directly with your recovery kit - if you have not sorted your recovery gear yet, the recovery gear guide above walks through exactly what to carry for the money.

About the Author

The Budget Overlander team covers trail-ready vehicle builds that don't require a second mortgage. Our guides come from real builds, real trails, and real budgets - not catalog wishlists.

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