Best Spare Tire Lock For Trailer: Compare 8 Options

#1 · Best Overall

1. Batteryshackle Spare Tire Lock

Best for: Travel-trailer spare security.

Why it ranks #1: Made for travel-trailer spare tires, it claims compatibility with most spare tire mounts and includes a padlock for a ready-to-use locking setup.

A high-grade steel lock with a supplied padlock gives the Batteryshackle TL01 a straightforward role securing travel-trailer spare tires. Its description calls the fit universal for most spare-tire mounts and says installation takes minutes, making it an option for owners seeking a simple, weather-resistant trailer lock.

Batteryshackle lists the TL01 for travel-trailer spare tires and describes it as compatible with most spare-tire mounts, which makes mount style less restrictive than products limited to one orientation. Heavy-duty steel construction supplies the stated material, while the weather-resistant feature supports use in exposed trailer settings. The lock installs in minutes and comes with a padlock, so the listed setup includes the locking component rather than requiring a separately sourced padlock.

Skip it if you need a specified rim-thickness adjustment; Heininger 6027 fits vertical-mount rims from 1/4 to 7/8 inch.

The TL01 suits travel-trailer owners who want a steel, weather-resistant lock with a padlock included and quick installation. Its fit is stated for most mounts rather than every mount, so carrier compatibility remains the boundary.

Listed on Amazon as: Spare tire Lock

#2 · Best Vertical-Mount Fit

2. Heininger 6027

• Weight: 9.6 oz

Best for: Vertical-mount RV spares.

Why it ranks #2: Specifically designed for marine, utility, and RV vertical mounts, it fits rims 1/4 to 7/8 inch thick; it does not fit truck or SUV spares.

A 1/2-inch pin adjustable for rims from 1/4 to 7/8 inch thick gives the Heininger 6027 a clearly defined fit for vertical-mount spare tires. Its intended marine, utility, and RV applications make it a targeted choice for those carriers, not a general-purpose truck or SUV spare lock.

The adjustable pin accommodates rim thicknesses from 1/4 to 7/8 inch, giving buyers a specific measurement range to check against their wheel. Heininger says the lock replaces one lug bolt, securing the spare to its carrier, and its flush locking design keeps the mechanism at the wheel. The product is intended for marine, utility, and RV vertical mounts; the listing explicitly excludes truck and SUV spare tires and warns it will not work with welded spare lugs.

Skip it if you have a truck or SUV spare; CURT 23562 is specified for side-mount spare tires on vehicles.

The 6027 is for marine, utility, and RV owners with a vertical-mount spare and a rim within its stated thickness range. Avoid it for truck or SUV spares, and check that the lugs are not welded.

Listed on Amazon as: Heininger 6027 HitchMate Trailer Spare Tire Lock for 1/4" to 7/8" Thick Rims, Designed for Marine, Utility and RV Vertical Mount Spare Tires

#3 · Best Bracket Coverage

3. Trimax ST30

• Material: Alloy Steel, Chrome, Stainless Steel
• dimensions: 2.3 x 8.8 x 11.5 in

Best for: Frame-loop cable security.

Why it ranks #3: Its 36-inch cable loops around the frame and is designed to secure both the spare tire and mounting bracket on boat trailers and other vehicles.

A welded cable that loops around the trailer or vehicle frame gives the Trimax ST30 a different approach to spare-tire protection: it secures both the tire and its mounting bracket. The 36-inch cable suits buyers who want the lock to connect the spare assembly to the surrounding frame, rather than relying only on the tire mount.

The ST30’s cable measures 36 inches by 12 millimeters and is specified to loop around the vehicle or trailer frame. That arrangement helps secure the tire and bracket together, addressing both parts of the spare setup. Its weather-proof cap protects the lock mechanism from harsh weather, a useful detail for equipment kept outdoors. Trimax lists boat trailers, motorhomes, trucks, Jeeps, and vans among suitable vehicle types, giving this cable lock a broad range of stated applications.

Skip it if you need a lock that replaces a lug bolt; CT Johnson STL-100-KA2 uses a machined-steel replacement lock.

Choose the ST30 if your trailer or vehicle spare can be reached by its 36-inch frame-loop cable and you want the bracket secured too. Its cable format is the key fit consideration for buyers comparing lock styles.

Listed on Amazon as: TRIMAX ST30 Spare Tire Cable Lock, 36" x 12mm, Black/Chrome

#4 · Best Side-Mount Fit

4. Trimax TNL740

• Material: Alloy Steel
• Weight: 3.52 oz
• dimensions: 5.08 x 8.38 x 13.72 in

Best for: Side-mount trailer owners.

Why it ranks #4: Designed for all side-mount spare tires, this alloy-steel nut lock specifically lists trailer tires and installs in minutes.

Universal compatibility with side-mounted spare tires is the Trimax TNL740’s clearest advantage, letting trailer owners secure that style of carrier without a model-specific fit listed. Its straightforward installation keeps setup simple, while the lock’s stated use for propane tanks adds another practical application beyond spare-tire security.

The TNL740 is specified for all side-mount spare tires, making it a direct option for trailers with that carrier arrangement. Its alloy-steel construction provides the listed material for the locking job, and the simple installation process means setup does not require a complicated workflow. Trimax also identifies propane tanks as a compatible use, so owners with both a side-mounted spare and a tank can use the lock for more than one security task. The listing does not specify a cable or frame attachment.

Skip it if you have a vertical-mount spare; Heininger 6027 is specified for vertical marine, utility, and RV tires.

For trailer owners with a side-mounted spare, the TNL740 offers a simple lock and a listed second use on propane tanks. Its stated tire compatibility is side-mount only, so check the carrier style before choosing it.

Listed on Amazon as: TRIMAX TNL740 Spare Tire Nut Lock for Side Mount Spare Tires, Easy Install – for SUV, Trailer Tire, and More – 1 Pack

#5

5. RITE-HITE Spare Tire Lock

• Material: die
• Weight: 0.27 g

Best for: Simple lug-cover installation.

Why it ranks #5: Its stated uses include boat trailers and cattle trailers, and the install replaces a lug nut before a lock cover is secured in place.

Installation by removing one lug nut is the RITE-HITE spare tire lock’s defining practical feature, allowing owners to place its lock and cover directly at the spare’s lug position. It is listed for boat trailers, RVs, SUVs, and cattle trailers where a non-operating spare needs added security.

RITE-HITE describes a straightforward workflow: remove one lug nut, install the lock, and fit the lock cover in place. That approach secures the spare at its existing lug position rather than routing a cable around the vehicle. The product includes a lock and key and is identified as weather resistant, supporting use on exposed trailer and recreational-vehicle spares. Its listed applications include boat trailers, RVs, SUVs, and cattle trailers, while the supplied information does not give a rim-thickness range.

Skip it if you need a stated rim-thickness range; Heininger 6027 adjusts for vertical-mount rims from 1/4 to 7/8 inch.

This is a fit for owners of boat trailers, RVs, SUVs, or cattle trailers who prefer a lock installed at a lug position. The listing gives no rim-thickness range, so buyers needing that specification should look elsewhere.

Listed on Amazon as: RITE-HITE Spare Tire Lock Device – Prevent Theft, Protect and Secure Your Spare Tire, Great for Boat Trailers, RVs, SUVs and more

#6

6. HonesaLoc ZC522

• Material: Metal
• dimensions: 1.69 x 1.18 x 2.25 in

Best for: Password-lock side mounts.

Why it ranks #6: This chrome-plated metal nut lock is made for side-mounted trailer spares and uses a password-style locking design.

A password-lock design sets the HonesaLoc spare tire nut lock apart for owners who want a combination-style approach to a side-mounted spare. The listing says it secures tire nuts to help prevent wheel removal when a vehicle is unattended, and specifies universal compatibility with side-mount spare tires.

HonesaLoc identifies the lock as compatible with all side-mounted spare tires, making carrier orientation the main stated fit detail. Its password-lock feature provides the listed keyless locking approach, while the steel construction and chrome-plated surface are specified for strength and corrosion resistance. At 1.69 by 1.18 by 2.25 inches, it is a small nut-lock unit rather than a frame-loop cable, a distinction that helps buyers choose based on their preferred locking arrangement.

Skip it if you need a frame-loop cable to secure the bracket too; Trimax ST30 loops around the frame and protects tire and bracket.

The HonesaLoc fits owners seeking a password-style nut lock for a side-mounted trailer or vehicle spare. Its steel and chrome-plated construction supports outdoor use, but its stated spare-tire fit does not cover vertical mounts.

Listed on Amazon as: Spare Tire Nut Lock for Side Mount Spare Tire Trailer Spare Tire Mount Tire Lock Locking Lug Nuts Easy Install for SUV, Trailer, RV, Truck

#7

7. CT Johnson STL-100-KA2

• Material: Alloy Steel, Chrome, Zinc
• Weight: 16 oz

Best for: Matched-pair lug locks.

Why it ranks #7: The two locks replace lug bolts and adjust to rims 1/4 to 7/8 inch thick, but the listing does not specify a trailer mount type.

Two keyed-alike locks make the CT Johnson STL-100-KA2 useful for buyers securing more than one spare or keeping a shared key arrangement. Each machined-steel lock replaces a lug bolt, and its adjustable fit covers rims from 1/4 to 7/8 inch thick.

The STL-100-KA2 package includes two locks, and the title identifies them as keyed alike, allowing the pair to operate within one matching-key arrangement. Each lock replaces a lug bolt to secure the tire to its carrier, while the 1/2-inch pin adjusts for rims 1/4 to 7/8 inch thick. A covered key slot helps shield the opening from the elements, and the listing specifies a patented pickproof screw-and-lock mechanism with a five-pin tumbler.

Skip it if you need a single password-operated nut lock for a side mount; HonesaLoc ZC522 uses a password-lock design.

The CT Johnson pair fits buyers securing two spare tires or wanting keyed-alike lug-replacement locks, provided their rims fall within the stated adjustment range. Its covered key slot and pickproof mechanism add specific protection details.

Listed on Amazon as: Deadbolt Spare Tire Wheel Lock – 2-Pack Keyed Alike (STL-100-KA2) – Made in U.S.A.

#8

8. CURT 23562

• Material: Alloy Steel, Chrome
• Weight: 6.4 oz
• dimensions: 1 x 5 x 4 in

Best for: Chrome side-mount security.

Why it ranks #8: Its steel, chrome-plated lock is designed for side-mount spare tires, but the listing does not specifically identify trailer use.

A durable chrome-plated finish distinguishes the CURT 23562, helping protect its steel spare-tire lock from the elements while securing a side-mounted tire. Its focused fit is useful for buyers who want a compact, purpose-specific option for a side-mount spare rather than a cable routed around a frame.

CURT specifies this lock for side-mount spare tires, so its intended application is clear for owners with that carrier style. The steel construction supplies the listed high-strength material, while the chrome-plated finish is identified as corrosion-resistant to help protect the lock from exposure. Two included keys give the owner a spare key option, and the 1-by-5-by-4-inch dimensions describe a compact piece of hardware for a focused tire-locking task.

Skip it if you carry a vertical-mount RV spare; Heininger 6027 is specified for vertical marine, utility, and RV applications.

The CURT 23562 suits owners seeking a steel, chrome-finished lock for a side-mounted spare, with two keys included. Its listed fit is specific to side-mount tires, so vertical carriers call for another option.

Listed on Amazon as: CURT 23562 Spare Tire Lock, Chrome