Aside from being a classy sedan, your BMW 740i is also proven to be a very reliable vehicle. It offers a comfortable ride, which is made possible by the different components in its suspension system. One of these components is the strut. It is responsible for cushioning the impact between the vehicle and the road, therefore ensuring the passengers a smooth and stable journey. But like all other car parts, struts are very much prone to wear and damage. BMW 740i struts are generally tough, but depending on maintenance and vehicle use, they can start to elicit problems as well. Here are common signs that your struts are no longer in top shape and their causes:
Leaks are a recurring problem in automobiles. When you notice them coming from your strut assembly or when oily deposits begin to appear on the strut itself, you might want to check the seal and see if it has worn out. Your strut assembly is composed of tubes, valves, and fluids, which work together to control the bounce of the springs in the suspension system. Now, the seal functions to prevent these fluids from seeping out of the assembly. But because seals are meant to deteriorate eventually because of age, they can cause the strut to leak and become soft and bouncy.
Unusual tire wear is a common sign of a blown strut. You can easily notice this irregularity once you examine the tire. If it rebounds upward after even a small bump and fails to return to the ground at once, then your strut might be in bad condition. However, a blown strut can also cause excessive bouncing. You can test it by pushing down on the front and rear of your BMW 740i. If your car bounces more than once or twice, your strut might have a damaged cylinder or piston rod.
It's pretty easy to identify a strut problem when you hear a muffled or clunking noise. This sound can usually be heard when you drive over bumps, potholes, or curbs. It is produced when the chassis comes into contact with the suspension parts, which is also a result of a blown strut.