Trailer Sway Control Guide (Canada)

Trailer sway is the side-to-side fishtail that can start with a gust, a pass-by, or a soft tire — and escalate fast on Canadian highways. This guide covers causes, friction vs integrated sway control, and when you need it.

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Pair with the weight distribution guide, buying guide, and how to choose. Prefer the full index? Open the towing guides hub.

Official CURT videos (sway control)

Public videos from the CURT YouTube channel (@curtmfg). Watch here, then keep reading.

If an embed does not load in your browser, use the YouTube link under each card.

CURT 17200 Sway Control Kit

CURT · Friction sway kit with weight distribution

See how a bolt-on friction sway control kit attaches to a WD setup — the classic add-on bar approach.

Watch on YouTube →

CURT True Course™ Advanced Sway Control

CURT · Electronic trailer sway control overview

How True Course™ senses out-of-range trailer motion and intervenes independently of a basic WD hitch.

Watch on YouTube →

CURT True Course | Stop Trailer Sway

CURT · True Course™ sway control short

A quick look at stopping sway before it builds — useful context for electronic vs mechanical control.

Watch on YouTube →

CURT TruTrack™ WD with Integrated Sway

CURT · TruTrack weight distribution + sway

TruTrack integrates sway control into the WD hitch so you are not bolting on a separate friction bar.

Watch on YouTube →

What causes trailer sway?

  • Tongue weight too light (or loaded wrong): Cargo stacked far aft or a squatting rear reduces stability. Aim for a healthy tongue-weight percentage. Load heavy items forward of the trailer axles when you can.
  • Speed + crosswinds: Prairie gusts, mountain passes, and open corridors amplify small oscillations. Passing transports can start a fishtail.
  • Soft tires / wrong pressures: Check cold pressures to the tire and trailer placards before every long run.
  • Worn suspension or coupler play: Loose latches, tired springs, and an unlevel ball mount all add yaw.
  • Abrupt steering or braking: Sudden lane changes and trailer-brake mismatch can excite sway — especially without a properly adjusted brake controller on 7-way setups.

Friction sway vs WD with sway control

Friction add-on

Sway control bar / kit

A friction unit (like the CURT 17200 kit) clamps between the tow vehicle and trailer frame to resist side-to-side motion. Often paired with a conventional WD hitch that already levels the tow vehicle.

  • Add-on hardware — install and adjust per the sheet
  • Does not replace correct tongue weight or WD setup
  • Common upgrade when a plain ball mount feels nervous at highway speed

Read the WD guide →

Integrated WD

TruTrack™ & similar systems

CURT TruTrack™ combines weight distribution with built-in sway control through spring bars and frame brackets. Leveling and lateral resistance in one system.

  • Best when you already need WD for rear squat / tongue weight
  • Setup and head angle still matter — watch the install videos
  • Electronic options (True Course™) add active help for larger trailers

How to choose a hitch →

When do you need sway control?

Situation Typical direction Notes
Light utility / short trips Often none (if stable) Fix loading and tire pressures first.
Travel trailer / rear squat WD ± sway If the tow vehicle squats or steering feels light, start with WD; add friction or choose TruTrack-style integrated sway.
Tall trailer + windy routes WD with sway Prairie and coastal highways amplify yaw — do not skip setup.
Already have WD, still nervous Add friction or upgrade head Confirm tongue weight and tire pressures before blaming hardware.

Canada highway tips

  • Slow down before the sway grows — ease off the throttle; avoid hard steering.
  • Check trailer and truck tire pressures when cold.
  • After winter, inspect WD chains, brackets, and friction surfaces.
  • If lights or brakes misbehave at the same time, fix wiring first — see light troubleshooting.

Quick decision path

Step 1Fix loading

Tongue weight and tire pressures before buying sway gear.

Step 2Level the tow vehicle

If the rear squats, start with WD — see the WD guide.

Step 3Add sway control

Friction bar or integrated WD head based on your trailer and routes.

Step 4Test carefully

Short low-speed checks before highway runs. Adjust per the CURT sheet.

Popular truck & SUV hitch pages

Related guides & shopping

Weight DistributionWhen the rear squats Class 3 vs Class 4Receiver capacity 5th / GooseneckIn-bed systems Buying GuideClasses and capacity Towing Guides HubAll guides

Trailer Hitches Collection

Start with the right CURT receiver and ratings — sway control builds on a solid hitch and ball-mount foundation. Free shipping across Canada.

Open trailer hitches →

Also useful

Shop ball mounts and hitch accessories once the receiver is chosen. Pair WD / sway gear with correct wiring for braked trailers.

Ball mounts →
Hitch accessories →
All towing →
Shop hitch by vehicle →

More help: towing guides hub · Class 3 vs Class 4 · 5th / gooseneck · contact support