car vibrates on braking [Archive] - Bimmerfest - BMW Forums

: car vibrates on braking

bmw 525iA
11-06-2009, 04:00 AM
can you please tell me the reason why my car vibrates while braking at high speeds

11-06-2009, 05:55 AM
It sounds like the beging of upper control arm / thrust arm failure.

11-06-2009, 10:07 AM
That or warped rotors.

11-06-2009, 11:26 AM
i had that same problem on my e36. when i replaced my front rotors the problem was solved.

11-06-2009, 04:25 PM
I'd say it was time to replace all four rotors. Does it shimmy between 50-60 straight driving?

11-07-2009, 12:42 PM
i would start by taking 1 wheel off at a time and pass your hand over the rotors (both sides) and see if any have grooves or scratches. if you find any that due you have 2 choice replace it or have them resurfaced if thick enough. you might not have to spend on replacing all four.

11-08-2009, 01:59 PM
dont cut , buy new rotors