The vibration of the steering wheel during braking in the BMW X5 can be attributed to several factors, including uneven brake discs, aging engine mounts, worn-out tires, wheel deformation, dirty throttle, and excessive carbon buildup in the fuel injectors.
Firstly, worn or uneven brake discs can directly cause vibrations when the vehicle is braking. The solution is to either resurface the brake discs or replace them with new ones, and it is advisable to visit a service center for professional maintenance.
Secondly, the aging of engine mounts can also be a reason for vehicle vibrations. If there is an issue with the engine mounts, these vibrations can be transmitted to the steering wheel and cabin, causing shaking at idle. The solution is to replace the engine mounts.
Additionally, tire aging, deformation, and bulging are significant factors contributing to vibrations during vehicle operation. Owners can manually check the tire tread; if the tread appears serrated, it indicates that the tires are worn out and need replacement. Lastly, dirty throttle bodies and excessive carbon in the fuel injectors can also disrupt engine performance, leading to instability. It is recommended to regularly check the throttle body and fuel injectors and clean them if they are found to be excessively dirty.