How To Determine The Correct Disc Brakes For Triple Axle Aluminum Boat Trailer
Updated 10/22/2025 | Published 04/10/2025
Question:
hello i have a triple axel Aluminum I beam boat trailer. Hoe do ai determine which disc brakes fit? is there such a thing as electric over hydrolic disc brakes? the tires are 75R15 5000 lb axels
asked by: Justin W
Expert Reply:
Hello Justin, thanks for reaching out. If you are needing to replace just one hub or rotor, I would need to know exactly what brand of brakes you have currently. Replacement brake parts are brand specific, and there would be no way to look up your trailer to know what you have. For a hub I would also need to know your inner and outer bearing sizes, since the 5,000 lb axles do not really have a standard for that.
If you are looking to replace everything on all 3 axles I would mainly need to know your bearing size and hub bolt pattern.
There is such thing as electric over hydraulic disc brakes. This is generally recommended for 5th wheel campers, but if you want to look into it for your trailer, the article I linked for you below will be a great starting point. I also linked an article that shows how to measure the bearings and hubs and everything.
If you can tell me your bearing sizes and hub bolt pattern I am happy to get back to you with a list of recommended parts.
Product Page this Question was Asked From
Kodiak Disc Brake Kit - 12" Rotor - 6 on 5-1/2 - Dacromet and Stainless Steel - 6,000 lbs
- Trailer Brakes
- Disc Brakes
- Marine Grade
- 6 on 5-1/2 Inch
- Rotor
- 6000 lbs Axle
- 14-1/2 Inch Wheel
- 15 Inch Wheel
- 16 Inch Wheel
- Kodiak
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Demco Premier Series Above-Bed Base Rails and Custom Installation Kit for 5th Wheel Hitches
- Q&A: What Kodiak Disc Brake Kit will Replace My Brake Set-Up with Slip On Rotor Stamped 46247?
- Shop: Kodiak Disc Brake Kit - 12" Rotor - 6 on 5-1/2 - Dacromet and KodaGuard - 5,200 to 6,000 lbs
- Search Results: brake hose
- Shop: Kodiak Disc Brake Kit - 12" Rotor - 6 on 5-1/2 - Dacromet and Stainless Steel - 6,000 lbs
- Shop: etrailer Rubber Hitch Cover for 2" Trailer Hitches - Qty 1
- Shop: Aluminum Sendel Series T07 Black Machined Trailer Wheel - 15" x 6" Rim - 6 on 5-1/2
- Search Results: kodiak hydraulic brake hose
- Shop: Kodiak Disc Brake Kit - 12" Rotor - 6 on 5-1/2 - Stainless Steel - 5,200 lbs to 6,000 lbs
- Video: All You Need to Know About the Kodiak Disc Brakes
- Q&A: Does The DeeMaxx Disc Brake Kit DE82FR Come With Brake Pads?
- Article: How to Tell the Weight Rating of a Trailer Axle
- Q&A: How to Replace Tie Down Engineering LP7000 Actuator
- Q&A: Replacement Brake Pads for 2015 AmeraTrail Boat Trailer
- Q&A: Recommended Replacement Caliper For A Kodiak 225
- Q&A: What Info is Needed to Pick Out Correct Offset 17.5 inch Wheel
- Q&A: Comparing Maxx and Stainless Steel DeeMaxx Disc Brake Kits
- Article: How to Bleed Your Trailer Surge Brakes
- Article: How to Measure for Trailer Hitch Drop
- Article: 5 Tell-Tale Signs It’s Time to Replace Your Trailer’s Leaf Springs
- Article: The Best Boat Bumpers
- Article: Adding Electric Over Hydraulic Disc Brakes
- Article: Trailer Wiring Diagrams
Jesse M.
10/22/2025
Hey Justin, were you able to measure your bearing sizes and hub bolt pattern for the triple-axle trailer? Knowing what you found could really help others trying to match disc brakes for similar setups. Your update could make it easier for the next person with the same question.