Originally Posted by mastek
There is not much data out there to support any actual improvement.
But brake systems are hydraulic fluid under pressure. So using reinforced stainless steel lines helps the fluid flow without expanding or flexing the brake lines in the process. However, this really is only felt during extreme hard braking.
There is no safety issue as these lines are more robust then the OE rubber ones.
As long as they are installed properly.
The best proof of their actual functionality is Professional and Amatuer racing series.
All of them change the rubber lines to stainless steel brake lines.
Thanks for chiming in. You pretty much said about everything I would have mentioned.
The greatest benefit is usually in pedal feel and modulation under heavy pressure like when on track or driving aggressively. They also hold up to heat much better than they typical rubber brake line.