What Causes and Prevents Trailer Sway that Starts Around 55 MPH

Published 07/05/2019

Question:

Even with cargo moved forward, had to add about 20 gallons of water to eliminate the sway. Knowing is half the battle. Thanks for your input.

asked by: JAMES R

Helpful Expert Reply:

If you can move the cargo in your trailer as far forward as possible that will be your best way to fight trailer sway. Not enough tongue weight relative to the weight of the trailer is the number one cause of persistent sway around 55 to 65 mph like you mentioned.

expert reply by: Jameson C

James R.

7/5/2019

Even with cargo moved forward, had to add about 20 gallons of water to eliminate the sway. Knowing is half the battle. Thanks for your input.

Jameson C.

7/5/2019

Glad you got it figured out and I appreciate you getting back with us! Ideally you want the tongue weight to be between 10 and 15 percent of the total trailer weight to prevent sway.