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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > steering wheel vibration when braking, brembo front pads and rotors only 1 year old



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      11-03-2018, 08:50 PM   #1
tnixa
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steering wheel vibration when braking, brembo front pads and rotors only 1 year old

I have an 09 328i xdrive wagon with 140K miles that I got about a year ago. When I got the car the steering wheel shook when braking so I replace the front pads and rotors with Brembo parts which I thought should be decent. This solved the problem but recently the vibration is back when braking at any speed again. The pads and rotors have less than 5,000 miles on them.

I took the rotors off today and cleaned off the rust between the hub and the rotor but that didn't seem to help.

Could the rotors be warped already? Do I need to stick to OE rotors?

Last edited by tnixa; 11-03-2018 at 09:03 PM.
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      11-04-2018, 03:35 AM   #2
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Quote:
Originally Posted by tnixa View Post
I have an 09 328i xdrive wagon with 140K miles that I got about a year ago. When I got the car the steering wheel shook when braking so I replace the front pads and rotors with Brembo parts which I thought should be decent. This solved the problem but recently the vibration is back when braking at any speed again. The pads and rotors have less than 5,000 miles on them.

I took the rotors off today and cleaned off the rust between the hub and the rotor but that didn't seem to help.

Could the rotors be warped already? Do I need to stick to OE rotors?
Rotors don't warp anymore. Do you have dark spots on the rotor surface area (pad build up)? We're your wheels torqued to the proper specification?
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      11-04-2018, 09:04 AM   #3
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Are you sure the wiggle is 1:1 with your wheel rotation? Worn suspension and tie rods will cause wiggle at higher speeds, as well as slightly bent wheels. If the steering wheel definitely moves when stopping from 10 mph to 0 slowly, suspect brakes. But with 140k, I would start with tie rods and checking alignment.
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      11-04-2018, 10:38 AM   #4
tnixa
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Quote:
Originally Posted by david in germany View Post
Rotors don't warp anymore. Do you have dark spots on the rotor surface area (pad build up)? We're your wheels torqued to the proper specification?
I do have some dark spots on the rotors. I'll try cleaning those off. I torqued wheels to 100 ft-lbs but it seems I should have done 90 so I'll try that also.
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      11-04-2018, 10:40 AM   #5
tnixa
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Originally Posted by dangdude View Post
Are you sure the wiggle is 1:1 with your wheel rotation? Worn suspension and tie rods will cause wiggle at higher speeds, as well as slightly bent wheels. If the steering wheel definitely moves when stopping from 10 mph to 0 slowly, suspect brakes. But with 140k, I would start with tie rods and checking alignment.
Car drives without any vibration at all speeds until I brake. I think I'll start with cleaning the spots off the rotors and go from there.
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      11-04-2018, 11:02 AM   #6
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Quote:
Originally Posted by tnixa View Post
I do have some dark spots on the rotors. I'll try cleaning those off. I torqued wheels to 100 ft-lbs but it seems I should have done 90 so I'll try that also.
The dark spots are either pad residue or hot spots from hard stops. If they are hot spots the only way to get rid of them is to have the rotors resurfaced. Depending on the pad material you may also need a resurface as well.
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      11-06-2018, 09:27 PM   #7
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Over the weekend I tried bedding in the brakes but that didn't seem to help. Today, I had the rotors resurfaced and the vibration is now gone. There was one groove on the back side of one of the rotors that was kind of deep so maybe that was causing problems or could have been the pad reside. I figured it was much less work to have them resurfaced vs trying to clean them myself.
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      11-07-2018, 09:38 AM   #8
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Quote:
Originally Posted by tnixa View Post
Over the weekend I tried bedding in the brakes but that didn't seem to help. Today, I had the rotors resurfaced and the vibration is now gone. There was one groove on the back side of one of the rotors that was kind of deep so maybe that was causing problems or could have been the pad reside. I figured it was much less work to have them resurfaced vs trying to clean them myself.
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