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vwetish vwetish is offline
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Default 02-01-2017, 01:28 PM

Quote:
Originally Posted by ratapeludismo
Hello!
You had the same problem?
I have replaced piece # 9
http://www.realoem.com/bmw/enUS/show...diagId=31_0814
I read that the last tightening must be done with the car on the ground,
It is true?
Thank you!
Yes, is true, suspension need to be loaded.
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ratapeludismo ratapeludismo is offline
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Default 02-01-2017, 05:31 PM

Quote:
Originally Posted by vwetish
Yes, is true, suspension need to be loaded.
Hello!

I remember my mechanic when he changed his upper arms did not !!

Can I reposition the arms well, or are the silentblocks already deformed?

Could it be the cause of the warping of all my brake discs?

Thank you!


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vwetish vwetish is offline
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Default 02-01-2017, 05:41 PM

Quote:
Originally Posted by ratapeludismo
Hello!
I remember my mechanic when he changed his upper arms did not !!
Can I reposition the arms well, or are the silentblocks already deformed?
Yes! If this was recent chances are the bushings are not damaged.
Quote:
Originally Posted by ratapeludismo
Could it be the cause of the warping of all my brake discs?
Thank you!
No! It could give you a false sensation of warped disk because of the vibration but it can not warp them. That is brake component only!
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Default 02-06-2017, 08:38 PM

The big question is: Are your rotors really 'warped'? The only way to know for sure is to measure run out with a dial indicator. When fitting the wheels, are you using a torque wrench and tightening the lugs in a cross pattern?

Finally, looking at the pictures of your rotors, you have a ton of deposits on them. I'm guessing you don't do much hard braking with that dark color. Go out and do 6 to 8 HARD stops (just short of ABS activation) from about 60 mph to 20 mph. When you smell hot brakes (from the pads out gassing) drive normally for about 10 minutes to cool the pads and rotors.

It's always best (and cheapest) to check the simple stuff 1st.


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Default 02-08-2017, 06:19 AM

Hello!
The disks were deformed 0.04
I installed brake pads and new discs.
Let's wait for the result.
Thank you all.


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Default 02-08-2017, 08:14 AM

Quote:
Originally Posted by ratapeludismo
Hello!
The disks were deformed 0.04
I installed brake pads and new discs.
Let's wait for the result.
Thank you all.
0.04 could be problematic. Check the hub run out too. Not only the disc. If hub is defective it will cause the disc to appear defective too. Inspect the hub.
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Alex@abrhouston Alex@abrhouston is offline
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Default 02-08-2017, 09:07 AM

Sounds like you need a mechanic to look at it. Stop guessing and have someone with training diagnose this for you.


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K100J K100J is offline
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Default 02-10-2017, 11:43 AM

Remove your wheels. If the inside face of the wheel is painted where it makes contact with the brake disc then this is the cause. Seen it 100s of times on BMW. The heat cannot dissipate correctly if this surface is painted.
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Default 02-10-2017, 12:03 PM

Quote:
Originally Posted by K100J
Remove your wheels. If the inside face of the wheel is painted where it makes contact with the brake disc then this is the cause. Seen it 100s of times on BMW. The heat cannot dissipate correctly if this surface is painted.
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K100J K100J is offline
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Default 02-11-2017, 04:05 AM

Quote:
Originally Posted by vwetish
What's the confusion?
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Default 02-11-2017, 08:50 AM

Quote:
Originally Posted by K100J
What's the confusion?
Paint! I'm sorry. Is little ridiculous.
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K100J K100J is offline
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Default 02-11-2017, 09:37 AM

Quote:
Originally Posted by vwetish
Paint! I'm sorry. Is little ridiculous.
We will agree to disagree. Hopefullly you get the the bottom of it op.
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Default 02-11-2017, 10:35 AM

Quote:
Originally Posted by K100J
We will agree to disagree. Hopefullly you get the the bottom of it op.
What happened with the 10y experience reply? Post this BMW instruction quide on brakes you speak of.
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K100J K100J is offline
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Default 02-11-2017, 11:25 AM

[QUOTE=vwetish;521028]What happened with the 10y experience reply? Post this BMW instruction quide on brakes you speak of

I'm not here to start an argument.

Also I cannot post bmw material online

Last edited by K100J; 02-11-2017 at 11:27 AM.. Reason: Expanded reply
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Default 02-15-2017, 04:10 PM

99.5% of the time, the rotor doesn't 'warp', it's pad deposits (already establish I think).

So the car is street driven, but have you considered your driving style? If you are doing a lot of heavy braking, and then sit at a red light immediately afterwards with your foot on the brake pedal, the pad material is going to stick to the hot rotor, and cause vibrations in short order.

if the symptoms are going away and returning after you do change rotors/pads, it's something related to the brakes.
If you change the pads, but don't resurface the rotors, it could be the brakes and you just didn't address the actual deposits on the rotors that are causing the vibration.
If changing pads/rotors doesn't affect the problem at all, then it's bushings, hub/bearing issue, or something else.


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Default 06-22-2017, 01:14 AM

Hello friends!
I have discovered that I have a very oval front wheel.
Can this cause uneven deposits on brake discs and resemble warped discs?
A greeting!


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Default 07-07-2017, 12:14 PM

How did you determine the wheel is out-of-round?

An out-of-round wheel could cause vibration by itself, but don't see how it would cause pad deposits.


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Default 08-23-2017, 03:10 PM

Agreed with the control arms advice, I've also expereanced this in the past and control arms were the fix action. Yes, the reason for not tightening control arm bushing with the suspension unloaded is the bushings have a much higher probability of making annoying creaking sounds. If the suspension is loaded or in the position they would be in while setting with the cars full weight on the tires when the arms are tightened should prevent this. If installing pollyurathane bushing, don't forget to use the grease that should come with them or you'll still have that creaking sound.
I hope this helps, Good luck
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Default 08-31-2017, 06:51 AM

OP issue was a bent wheel. Control arms aren't a fix. At least not on this platform. The bushings absorb the vibration. If they are worn out they won't but that doesn't change the fact that vibrations are coming from somewhere else. So replacing controls arm to cure brake related vibrations is basically an bandage. Root of the problem is else where...
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Default 10-08-2017, 02:50 PM

Hi guys!
Again vibration in the steering wheel when braking.
I have already changed 7 times. Sometimes in warranty and sometimes not.
Can they be the calipers?
It's been the only thing I have not changed.
Thanks friends!


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Default 11-01-2017, 10:36 AM

Did you already replace the wheel?


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