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Question: I read your article last week about trailer safety. I would like more information on trailer hitch ball sizes and why they have different sizes?
Answer: There are four different trailer hitch ball sizes. Each size has a different weight rating related to the trailer you are pulling. It is very important to make sure you always use the proper ball size with the trailer you are pulling. The ball size required for the trailer is stamped on the coupler of the trailer. If you use the wrong size ball, the trailer will not latch properly and could come disconnected. Once you have the ball connected to the coupler, you need to latch down and put a pin through the coupler to keep it secured.
Trailer hitch ball sizing:
•A 1-7/8 inch ball has a gross towing weight of 2,000 to 3,500 pounds. It is commonly used for light trailers like a utility trailer or small fishing boat.
•A 2 inch ball has a gross towing weight of 3,500 to 12,000 pounds. It is used for pulling campers and bigger boats.
•A 2-5/16 inch ball has a gross towing weight of 6,000 to 30,000 pounds. This size would be used for travel trailers and larger utility trailers.
•The largest size is a 3 inch ball which has a 30,000 pound rating. This is usually used on livestock or large travel trailers.
Question: Is it illegal for a vehicle pulling a trailer to have a ladder or ramp hanging from the side of the trailer?
Answer: You are able to have ladders or ramps secured to the side of an enclosed trailer as long as you do not exceed the width of 8 feet 6 inches. This is the maximum dimension that may be operated on Minnesota roadways without a special permit. The maximum height is 13 feet 6 inches. If you exceed the height or width, then you would have to apply for an oversize permit.
A few trailer safety tips:
•Make sure the pulling unit of the trailer has the towing capacity to pull the trailer safely.
•Check the trailer tires for proper tire pressure and the conditions of the tires. If the trailer has not been used recently, check the tread and for any cracking on the side walls.
•Make sure you have the proper ball size required for the trailer.
•Be sure the safety chains are connected and all the lights are working properly.
•Adjust your mirrors so you can see behind the trailer when towing it.
•Adjust your trailer brakes according to the load. For example, if you’re towing a heavy boat you would need to increase the brake press compared to pulling an empty boat trailer.
You can avoid a ticket — and a crash — if you simply buckle up, drive at safe speeds, pay attention and always drive sober. Help us drive Minnesota Toward Zero Deaths.
If you have any questions concerning traffic related laws or issues in Minnesota send your questions to Sgt. Troy Christianson – Minnesota State Patrol at 2900 48th Street NW, Rochester MN 55901-5848. You can also email him at: Troy. Christianson@state.mn.us.
