The brake line acts like a postman, carrying brake fluid from the master cylinder to various other brake components. The brake line can never be frayed, cracked, brittle or corroded. Usually, owing to the long time friction and rubbing against metal parts of your BMW car, the brake lines can be worn over the time, so you need pay more attention on it. If you find a leakage, even a tiny one, on the brake line, you should fix it immediately, can you cannot drive your car before it is fixed, so you may need to tow your car to a shop. Otherwise, you can do it by yourself. All you need is a tool box, time and energy. Once you decide to do replacement, welcome to shop a BMW genuine OEM brake line here with a discounted price.