<strong>12. </strong>Stainless brake lines will last a long time, but should be checked periodically as with all brake lines. Our rigs see flying dirt and rocks, brush, and other hard obstacles under our chassis and axles. A rubber hose may start to bulge before failure, but a stainless line typically will not display such signs as readily. Check for kinks and nicks in the outer cover or braid, any hose deformation, and signs of stretching or abrasion.