Can Brakes be Installed on Only One of the Axles of a Tandem Axle Trailer
Updated 09/10/2020 | Published 03/03/2013
Question:
I have a double axle 16 ft trailer with 3,500 lb axles. Is it OK to put brakes on only one axle. If so, do you put them on the front or back axle?
asked by: V C
Expert Reply:
Brakes can be installed on only one axle of a tandem axle trailer, however you should first check your state laws to see how many brakes are required for the gross vehicle weight rating (GVWR) of your tandem axle trailer. Some states require a specific number of brakes based on the maximum weight capacity of a trailer.
If you are able to install brakes on only one axle, I recommend installing them on the front axle if you use a torsion axle or on the rear axle if you are using tubular axles with leaf springs.
The front axle will bear more weight than the rear axle (see photo) and in braking situations, the weight of the trailer will be moving forward to the front axle. Having the stopping power at the front axle would be more effective than on the rear axle with independent torsion axles.
The reason you want the brakes on the rear axle with leaf spring axles is because the flex in the suspension will actually push the rear axle into the ground when braking making the rear axle the more effective braking axle, even when it scrubs.
To install a brake assembly on your axle you will need brake mounting flanges welded to the spindle or axle if you do not already have them. If you do not currently have a brake mounting flange, they should be installed by a qualified professional that has experience with trailers. When ordering a brake assembly, you will want to choose a brake assembly that matches the bolt pattern of the brake mounting flange. I have attached three FAQ articles on parts needed to add brakes to a trailer.
Robert O.
9/7/2020
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Product Page this Question was Asked From
Dexter Trailer Hub and Drum Assembly for 3,500-lb Axles - 10" Diameter - 5 on 5
- Trailer Hubs and Drums
- Hub with Drum
- Standard
- L68149 / L44649
- Standard Grade
- For 3500 lbs Axles
- 5 on 5 Inch
- 13 Inch Wheel
- 14 Inch Wheel
- 14-1/2 Inch Wheel
- 15 Inch Wheel
- Dexter
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Mike M.
6/10/2020
After installing new breaks on one axel, how do I keep the new breaks from grabbing before the old breaks on the other axel. Thank you in advance!