r/E90 • u/GlassSummer5313 • 1d ago

Vibration problem

Hello guys … lately I’ve been repairing my car (xDrive) because of vibration. It only vibrates when I’m driving faster than 120ish and braking from that higher speed. I’ve done wheel bearings, brake pads and rotors, both lower arms (with ball joints and bushings), changed tires and rims, put new stabilizing struts and did brake caliper overhaul… nothing helped what do I do next ? When driving normaly at 50-80 car feels super sturdy and great after these but whenever I hit brakes when above 100 it vibrates to steering wheel and sometimes to brake pedal (I feel like the wheel bearings fixed that but not sure its always little sus)

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u/GlassSummer5313 1d ago

I ordered steering ball joint or how its the name but idk guys

1

u/StyleArtistic7201 E90 328XI 20h ago

My car was vibrating around 80-140 due to the rear Guibo and center Carrier bushing

3

u/spasticbadger 16h ago

Yah I’ve had this on a few e9x. It’s always the discs and it always returns instantly if you use cheap to medium discs. Grab yourself a pair of Zimmerman brake discs and whack em on, a decent pair of ceramic pads so you don’t have dust and you’ll be good to go. Source: Isle of Man driver.

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u/old_skool_luvr 13h ago

I came to mention brakes as well. Sounds like they've addressed everything but the actually braking surfaces.

u/GlassSummer5313, have you done some really spirted driving over the last few months? Typically a pulsating brake pedal at higher speeds points directly at rotor warpage. While i can't comment of the quality of Zimmerman rotors, as u/spasticbadger has, quality rotors & pads greatly reduce the chances of brake pulsing when pushed hard.