Installing Disc Brakes on 7,500-lb Tandem Axle Boat Trailer
Updated 05/12/2015 | Published 05/10/2015
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Question:
I am going to install disc brakes on a boat trailer that currently has no brakes. Does it matter what axle i install the brakes on, front or rear axle. Trailer has 2 3500 lb axles. Both axles have the mounting flanges. Thanks
asked by: David M
Expert Reply:
If you will install disc brakes on only one of the two axles on your tandem axle boat trailer you will install them on the rear axle if it uses a leaf spring suspension. Naturally, it would be best to install brakes on both axles, or at least to install a 5200-lb-rated set of brakes on the one axle. Your braking capacity needs to match your trailer's weight capacity.
You might want to have a look at the linked article which describes much of the process of selecting components to install disc brakes on a trailer that does not have them. You can actuate your new disc brakes with either a hydraulic surge coupler or with an electric-over-hydraulic actuator like # HBA16 that requires you to also have a compatible brake controller in the tow vehicle.
I included a link to our main page for 3500-lb disc brake kits, such as Kodiak # K2HR35DS, which fits 4-bolt brake flanges and which is suitable for use with 13- to 16-inch wheels with a 5-on-4-1/2 bolt pattern.
