BMW E32 vibrates when braking
735i
Why does my E32 vibrate when braking?
The most common cause is warped brake discs. They warp easily if they are worn below the permitted minimum thickness. The vibration is typically felt in the steering wheel during hard braking at over 70 km/h.
What other than the brake disc can cause vibration when braking?
The cause can also be worn front suspension: loose lower ball joints, thrust arm bushings, lower control arms or tie rods. If replacing the discs does not help, check these.
Does replacing the brake discs help with the vibration?
Often it does, when the old discs are below the permitted thickness. Replace the discs and brake pads at the same time. If the vibration returns later, the cause can be glazing of the disc or a worn front-end part.
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