Do You Need a Sway Control System for Small Trailers?

Do You Need a Sway Control System for Small Trailers?

SCOTT MCCUSKEY @ December 13, 2025

Towing a small trailer can be a convenient and cost-effective way to transport cargo, recreational gear, or even a compact camper. While small trailers are generally easier to tow than larger ones, many drivers still wonder: Do I need a sway control system for a small trailer? The answer depends on several factors, including trailer weight, driving conditions, vehicle capability, and towing experience.

This article explains what trailer sway is, why it happens, and whether a sway control system is necessary for small trailers.

What Is Trailer Sway?

Trailer sway refers to the side-to-side movement of a trailer while being towed. It can range from mild drifting to violent oscillations that make the trailer feel unstable and difficult to control. In severe cases, trailer sway can lead to loss of control, jackknifing, or accidents.

Even small trailers are not immune to sway. While they are lighter and shorter than large travel trailers, they can still sway under the right conditions.

What Causes Trailer Sway?

Understanding what causes sway can help you determine whether a sway control system is necessary for your setup.

1. Improper Weight Distribution

One of the most common causes of sway is improper loading. If too much weight is placed toward the rear of the trailer instead of near the axle or tongue, the trailer can become unstable.

2. Insufficient Tongue Weight

Tongue weight is the downward force the trailer exerts on the trailer hitch. If the tongue weight is too light, the trailer is more likely to sway. A general guideline is that tongue weight should be about 10–15% of the total trailer weight.

3. Wind and Weather Conditions

Strong crosswinds, gusty weather, or passing large vehicles can push a trailer sideways. Small trailers, especially those with tall or flat sides, can be more affected by wind than expected.

4. Speed

Higher speeds increase the likelihood and severity of sway. Even a small trailer can become unstable if towed too fast.

5. Vehicle Mismatch

Towing a trailer that is close to or exceeds the vehicle’s towing capacity can reduce stability. A short wheelbase or lightweight tow vehicle may also contribute to sway.

What Is a Sway Control System?

A sway control system is designed to reduce or prevent side-to-side trailer movement. It works by applying resistance when sway begins, helping keep the trailer aligned with the tow vehicle.

There are different types of sway control mechanisms, but their main goal is the same: improve towing stability and driver confidence.

Do Small Trailers Really Need Sway Control?

The short answer is: sometimes. While many small trailers can be towed safely without sway control, there are situations where adding one is a smart decision.

Small Trailers That May Not Need Sway Control

You may not need a sway control system if:

• The trailer is very light (well below your vehicle’s towing capacity)
• The trailer is properly loaded with correct tongue weight
• You mostly drive at moderate speeds
• You tow short distances
• You rarely encounter strong winds or highway traffic

Examples include small utility trailers, garden trailers, or lightweight cargo trailers used locally.

When Sway Control Is Recommended for Small Trailers

Even for small trailers, sway control becomes more important under certain conditions.

1. Highway Driving

If you frequently drive on highways at higher speeds, sway control can add an extra layer of safety, especially when passing or being passed by large vehicles.

2. Windy or Mountainous Areas

Drivers who travel in open plains, coastal regions, or mountain passes may experience unpredictable wind conditions that increase the risk of sway.

3. Tall or Enclosed Trailers

Small enclosed trailers or compact campers with higher profiles catch more wind than open utility trailers. These are more prone to sway, even if they are lightweight.

4. Inexperienced Towers

If you are new to towing, a sway control system can provide peace of mind and help make the learning curve safer and less stressful.

5. Borderline Towing Capacity

If your trailer weight is close to your vehicle’s rated towing limit, sway control can improve stability and handling.

Benefits of Using a Sway Control System

Adding sway control to a small trailer setup offers several advantages:

Improved Stability

Sway control helps keep the trailer tracking straight, especially during sudden maneuvers or external forces.

Enhanced Safety

Reducing sway lowers the risk of losing control, which protects both the driver and other road users.

Reduced Driver Fatigue

Constantly correcting sway can be tiring. A more stable towing experience makes long drives more comfortable.

Greater Confidence

Knowing your trailer is more stable allows you to focus on driving rather than worrying about sudden movements.

Is Proper Setup Enough Without Sway Control?

In many cases, proper trailer setup is more important than sway control. Before deciding to add a sway control system, ensure the basics are correct:

• Load cargo evenly and securely
• Maintain proper tongue weight
• Keep tires properly inflated
• Stay within speed limits
• Match the trailer size and weight to your vehicle

A well-balanced small trailer may tow smoothly without any sway control, especially for short trips.

Potential Downsides to Consider

While sway control systems offer benefits, they may not be necessary for everyone.

• Added cost for equipment and installation
• Slightly more setup time when hitching
• May be unnecessary for very light or infrequently used trailers

For occasional, low-speed towing, these downsides may outweigh the benefits.

Final Thoughts: Do You Need One?

So, do you need a sway control system for a small trailer? It depends on how and where you tow.

If you tow occasionally, keep loads light, and drive at moderate speeds, you may not need one. However, if you travel on highways, encounter wind, tow an enclosed or taller trailer, or simply want extra peace of mind, a sway control system can be a worthwhile safety upgrade.

Ultimately, the goal is safe and stable towing. Whether that’s achieved through proper loading alone or with added sway control, understanding your trailer and driving conditions is the key to making the right decision.