Why don't original equipment manufacturers use steel braided brake hoses?
2 Answers
Brake steel braided hoses are constructed by replacing traditional rubber tubes with high-strength steel wire wrapping, plus an additional outer layer of wear-resistant material. During installation, the length of steel braided hoses must be appropriate—too short and they won't fit, too long and it can affect brake fluid delivery. Additional information: 1. Installation notes: Avoid sharp bends or twisting during installation, and leave sufficient length to accommodate front wheel turning. 2. Pros and cons: Standard brake hoses only have a single oil-resistant rubber layer. Steel braided hoses offer advantages like higher pressure resistance, firmer pedal feel, and improved efficiency; however, their metal braided layer is prone to metal fatigue requiring regular replacement, has poor heat dissipation, and needs to be used with aluminum multi-piston calipers or ventilation systems.
I've been studying automotive manufacturing, and the main reasons OEMs don't use steel braided brake hoses are to control costs and optimize durability. In mass production, standard rubber hoses are several times cheaper, meeting most daily driving needs while passing rigorous regulatory tests such as vibration resistance and sealing performance. Switching to steel hoses would increase material costs and might affect overall system compatibility, raising risks of fluid leaks or friction noise. Since average users don't pursue extreme performance, this additional expense isn't necessary. Manufacturers also prioritize long-term maintenance convenience—OEM rubber hoses are designed for extended lifespan, rarely failing within standard service intervals, thus avoiding compatibility issues from modifications. Ultimately, from an engineering perspective, this approach balances practicality and economy, ensuring safe driving for most people while saving money and hassle.