Safety chains on your trailer provide added insurance that the trailer will not detach from the tow vehicle when underway.
We strongly recommend that you crisscross the chains under the trailer tongue. Attach the chain on the left side of the trailer tongue to the hole or ring on the right side of the hitch ball. Attach the chain on the right side of the trailer tongue to the hole or ring on the left side of the hitch ball. This prevents the tongue from dropping to the road if the trailer coupler separates from the hitch ball. Rig the chains with just enough slack to permit tight turns.
Safety Chain Strength: The Society of Automotive Engineers and the Vehicle Equipment Safety Commission have adopted the following standards:
Trailer Class | Trailer Weight | Minimum Breaking Strength |
Class I | 2000 lbs. GVWR | 2000 lbs |
Class II | 2000-3500 lbs. GVWR | 3500 lbs |
Class II | 3500-5000 lbs. GVWR | 5000 lbs |
Class IV | 5000-10,000 lbs. GVWR | GVWR of trailer |