BMW is a car that represents luxury and comfort. Owning a BMW is a dream for many. BMW has certain maintenance protocols following which you can keep your BMW last for a lasting spell. When you drive BMW for a number of years, you are bound to experience issues with its coil spring. A bad coil spring can make the movement of the BMW unstable and cause a host of discomforting issues as well. So, you need to be aware of the signs of a failing coil spring so that you can take the right measures at the right time to protect your adorable road companion.