Knowing When to Replace the Springs in Your BMW
One of the fundamental parts of the suspension system is the coil spring. Springs are vital to vehicles because they support the weight of the car and allow it to remain stable during rough driving conditions. They can expand when you hit dips on the road and compress when you encounter bumps or cut into hard corners.
BMW uses coil springs to control lateral body movement. This is typical of driver-oriented cars and is generally held to be a more responsive design than springs used on pickup trucks and some other modern vehicles
How Do Springs Wear Over Time?
Your car’s springs are working at all times. They’re under more stress while you’re driving, but they must also bear weight while the vehicle is parked. The coil springs are considered “wear items” because these types of components are designed to wear down, and you are expected to replace them throughout your vehicle’s life.
Signs Your Springs Need To Be Replaced
Worn out suspension springs will begin to sag a bit noticeably. However, most drivers will find that their springs last for the life of their vehicles and that outright failure is very rare. If a spring was to fail, your suspension could be damaged, so knowing a few signs of potential failure can be very helpful.
- Car leans to one side
- Coil spring is visibly broken
- Rust or deterioration is visible on the spring
- Ride quality is rougher than usual
Driving on slightly worn springs doesn’t present any immediate danger to the driver. However, you won’t get the same performance and driving experience BMW built the car to deliver. For owners with earlier-model BMWs, a good rule is to replace your springs out at around 140,000 miles. With a fresh set of springs installed, you can enjoy your car the way it was meant to be driven.
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