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View Full Version : Is it possible to Install the Rotors and Brake Pads Wrong Way.


tyt215
05-18-2010, 07:01 PM
I just purchased the Pinhole Rotors and HAWKS HPS Plus Pads. I put them On then i did bedding 10 Times 60-10 Mph. Its squilles like a mother******. After Bedding it helped a little bit, now sometimes it squilles and sometimes not. What else is there for me to do, to get rid off this upleasant noise.

jesimmons
05-18-2010, 07:15 PM
Did you clean all the contact points on the caliper brackets and lubricate all the correct places with high temperature silicone grease when reassembling the calipers and pads?

See Attachment.

Nube1kenobi
05-18-2010, 09:09 PM
I just purchased the Pinhole Rotors and HAWKS HPS Plus Pads. I put them On then i did bedding 10 Times 60-10 Mph. Its squilles like a mother******. After Bedding it helped a little bit, now sometimes it squilles and sometimes not. What else is there for me to do, to get rid off this upleasant noise.

The first question: Can you install it the wrong way? Yes, difficult but can be done. You will know right away because you will be metal to metal. ;)

Second, assuming you installed it properly, you may still need to do a second bedding cycle after the brakes cooled down to get rid of that squeal.

grateful1
05-19-2010, 10:55 AM
Other than under/over tightening the bolts that hold your rotor in place I'm not sure how it is even possible to install rotors incorrectly. I'm sure that it is possible, even though I can't think of how at this point in time, but very highly improbable. You pretty much take them off and put them back on. Also, brake pads in cars with disc brakes are really hard to install incorrectly. My guess is that you need to do one of the following:

1) What jesimmons already stated
2) What Nube1 suggested in terms of the re-bedding process
3) Make sure everything is tightened to spec with a torq wrench

The one thing that I will say about your choice of pads is that on the two cars that I have had Hawk HPS Plus' on I have never successfully been able to get them to be squeel free. On one occassion they started squeeling about 3k after install and on the other occassion it strated squeeling from day one. I have never had any issues with other pads such as Axxis so I think it really is something that is inherent in the HPSs. However, I do know that others have claimed that thier HPSs have never squeeled but I believe this population is in the minority.

GoRavens
05-19-2010, 11:33 AM
See Attachment.

Where did you get the jpeg. Do you have a complete set for the car? Where can I download it?:)

Billd104
05-19-2010, 11:48 AM
Perhaps if you have to ask if it's possible to install them wrong you should have the installation done by a professional. Just my 2 worth. :D

tyt215
05-19-2010, 09:19 PM
It was done by professional and i paid 300 for it. For your information. But i dont trust any mechanics even BMW "Dealership" Mechanics. Only good thing is in BMW that you can just bring it back and tell them to fix it. But because of aftermarket parts they dont gurantee anything. So thank you Grateful1.

tyt215
05-19-2010, 09:21 PM
Thank you all of ya.

jesimmons
05-20-2010, 09:12 AM
Where did you get the jpeg. Do you have a complete set for the car? Where can I download it?:)

THose were screen shots from an excerpt from a BMW manual. Actually I only have a couple of pages related to E60 brake replacement. I honestly can't recall where I found the info. It was online in some forum I stumbled upon a couple of years ago. :(

Spyder
05-20-2010, 09:38 AM
Here's a good one...

http://www.bavauto.com/newsletter/2008_n208_newsletter.pdf#page=5

And another...

http://forums.5series.net/topic/83063-diy-brakes-replacement-painting-the-calipers/page__hl__brakes

But these are the best...

http://forums.5series.net/index.php?app=gallery&module=images&section=viewimage&img=11627

http://forums.5series.net/index.php?app=gallery&module=images&section=viewimage&img=11629

http://forums.5series.net/index.php?app=gallery&module=images&section=viewimage&img=11626

http://forums.5series.net/index.php?app=gallery&module=images&section=viewimage&img=11628

Spyder

grateful1
05-20-2010, 10:45 AM
Here's a good one...

http://www.bavauto.com/newsletter/2008_n208_newsletter.pdf#page=5

And another...

http://forums.5series.net/topic/83063-diy-brakes-replacement-painting-the-calipers/page__hl__brakes

But these are the best...

http://forums.5series.net/index.php?app=gallery&module=images&section=viewimage&img=11627

http://forums.5series.net/index.php?app=gallery&module=images&section=viewimage&img=11629

http://forums.5series.net/index.php?app=gallery&module=images&section=viewimage&img=11626

http://forums.5series.net/index.php?app=gallery&module=images&section=viewimage&img=11628

Spyder

Nice. Good info. Thanks Spyder

Boile
05-20-2010, 11:46 AM
To answer the question...
If the parts are installed "wrong" meaning backwards, things wouldn't pop in place correctly. One would notice immediately. You may not even be able to assemble the wheel back.
If by "wrong" means not torquing the screws correctly or missing something, then yes. Even pros can make that mistake, especially if they are noobs and this is their first job.
The most likely cause for brake noise is missing to grease ALL the contact points between pads and caliper.
Sometimes the noise comes from the pad material, and that's taken care of by proper bedding.

Spyder
05-20-2010, 12:00 PM
T
The most likely cause for brake noise is missing to grease ALL the contact points between pads and caliper.


Also grease the hammerheads to ease caliper sliding as pads wear, and thus promote even pad wear. From the BMW link above...

"Clean mounting faces (1) and (2) of brake lining hammer
heads/brake caliper housing and coat with anti-squeak
compound."

Spyder

jesimmons
05-20-2010, 12:09 PM
Thanks Spyder.... Those are the very ones. :)

I liked them mostly because they contain all the correct bolt torque specifications. But the diagrams are certainly helpful.

Spyder
05-20-2010, 01:06 PM
De nada.

SpartanGA
05-21-2010, 05:47 AM
I will be doing my rear brakes soon and had the above tech documents.

On the tightening torque, does anyone know what 30 - 5 Nm is for torque?? Most are easy "100 Nm" or "10 Nm" etc. But "30 - 5 Nm" Is this some German method to mean 30.5 or??

thx

Spyder
05-21-2010, 11:04 AM
I will be doing my rear brakes soon and had the above tech documents.

On the tightening torque, does anyone know what 30 - 5 Nm is for torque?? Most are easy "100 Nm" or "10 Nm" etc. But "30 - 5 Nm" Is this some German method to mean 30.5 or??

thx

Interesting question. I'd say that it's either a typo, ie, they meant 30 +/- 5, or that it's the range 25 to 30. But then, why not write it 27.5 +/- 2.5:dunno:

Spyder

tyt215
05-21-2010, 07:05 PM
Can i do bedding several times? Or the 1st Time and Thats itt

Nube1kenobi
05-21-2010, 07:53 PM
Can i do bedding several times? Or the 1st Time and Thats itt

Two cycles... after that it is just brake dust creation. :)

jesimmons
05-23-2010, 09:59 AM
Two cycles... after that it is just brake dust creation. :)

If brakes develop a squeal after a longer period of driving, you can always do the bed-in process again at any time. Done properly, it will recreate the desired microscopic layer of brake pad material on the rotor surfaces that improves braking and minimizes squeal. :)

Here's a good article on bedding in and the theory behind it: http://www.stoptech.com/tech_info/wp_bedintheory.shtml

jboucher
05-23-2010, 10:19 AM
can't help the OP, but to every one who provided links and help. Thanks very much. I have 6000km left on the front brakes according to iDrive and will be doing this brake job myself....(pads that produces less dust and rotors that look better...slotted and or drilled)

want to paint the calipers as well!!!

tyt215
05-23-2010, 09:00 PM
can't help the OP, but to every one who provided links and help. Thanks very much. I have 6000km left on the front brakes according to iDrive and will be doing this brake job myself....(pads that produces less dust and rotors that look better...slotted and or drilled)

want to paint the calipers as well!!!

Painting is good. But you cat try the caliper covers. MGP. go on www.calipercovers.com i ve put on my E60 530I, it looks awsome.