Spare Tire Locks

Why Spare Tire Locks Matter for RV and Trailer Owners

Your spare tire is one of the most valuable — and most vulnerable — components on your RV, travel trailer, or utility trailer. Mounted underneath or on the rear of your rig, spare tires are highly visible to opportunistic thieves and are often left unprotected. A quality spare tire lock is a simple, affordable line of defense that can save you from a costly and frustrating replacement, especially when you're far from home or in an unfamiliar campground.

How Spare Tire Locks Work

Spare tire locks are designed to secure the spare tire to its mount, making unauthorized removal difficult or time-consuming enough to deter theft. Most locks work by fitting over the lug nuts or the wheel's center bore, or by threading through the rim and anchoring it to the vehicle's undercarriage. Others use a cable or chain system to bind the tire to a fixed point. The best locks are built from hardened steel to resist cutting and sawing, and feature weather-resistant finishes to stand up to road grime, rain, and UV exposure — conditions that RV and trailer spares endure year-round.

What to Look for When Shopping Spare Tire Locks

• Compatibility: Make sure the lock fits your specific wheel size and lug pattern. Measure your spare's bolt circle diameter and lug nut size before purchasing.
• Material and hardness: Hardened steel bodies and shackles resist bolt cutters and saws far better than standard steel or aluminum.
• Weather resistance: Look for locks with a corrosion-resistant coating or finish, since trailer spares spend most of their life exposed to the elements.
• Keying options: Some manufacturers offer "keyed alike" programs so one key can operate multiple locks across your tow setup — a convenient feature for RV owners who also use hitch locks or coupler locks.
• Ease of installation: A lock you can install and remove quickly is one you'll actually use every time.

Top Brands in Spare Tire Locks

The Spare Shield is a brand dedicated specifically to spare tire security, offering purpose-built locking covers and hardware designed to fit a wide range of trailer and RV spare tire configurations. Their focused approach means their products address the exact vulnerabilities that generic locks often miss, making them a go-to choice for serious trailer owners.

Trimax is a well-established name in towing security, known for a broad lineup of trailer locks, coupler locks, and hitch locks. Their spare tire lock offerings bring the same heavy-duty construction and reliability that has made Trimax a trusted brand throughout the trailering community.

Complete Your Trailer Security Setup

A spare tire lock works best as part of a layered security strategy. Pairing it with a quality coupler lock, hitch pin lock, and wheel chocks gives you comprehensive protection whether you're parked at a campsite, a job site, or a storage facility. Browse the full selection of spare tire locks above to find the right fit for your rig.