Does The Roadmaster Breakaway Cable RM-8603 Have A Break Strength?
Updated 09/29/2025 | Published 09/11/2025
Question:
Roadmaster RM-8603 What is the force that it takes for this cable to break? I need a cable that can handle 300 lbs. before it breaks, At least need to know the diameter of the cable. Thanks Dave
asked by: David W
Expert Reply:
Hello David, interesting question. Breakaway cables like the Roadmaster # RM-8603 are not tested for break strength. That just isn't what they are made for. All they are made to do it pull the breakaway pin in the case of a disconnect. They are not made to carry any weight and the breakaway pin would pull out way before it got anywhere close to 300 lbs. So I'm afraid there aren't any concrete numbers I can give you for that.
That said, I can tell you the Roadmaster # RM-8603 cable is 0.10" thick, so hopefully that helps answer your question.
Let me know if there is anything else you need.
Product Page this Question was Asked From
Replacement Roadmaster Coiled Breakaway Cable for Flat Tow Brake Systems
- Accessories and Parts
- Flat Tow Brake System
- Cables
- Roadmaster
more information >
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Jesse M.
9/29/2025
Hey Dave, did the thickness information about the Roadmaster cable help you decide on a solution? I'm asking because your experience could guide others facing similar questions.