Stainless steel lines are a great upgrade for any car that sees hard braking or performance oriented driving such as drag racing with repeated stops, track days, HPDE events, circuit racing, oval track, etc. Under hard braking your stock rubber lines can bulge and will not transfer all the force of the fluid directly to the pads, causing a mushy pedal feel and less than ideal braking. As the fluid and rubber lines heat up it will only get worse. SS lines are a heavy duty braided line, so they will not bulge or expand under heavy braking. This will in turn give you better brake modulation as well.