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      05-02-2021, 03:49 PM   #1
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Rear brake pad how to

Hi,

anyone have a how to on replacing the rear pads?

What tool (ideally phone based) can I use to rewind the pistons on the parking brake?

What pads would you recommend?

Thank you.
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      05-15-2021, 05:17 PM   #2
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Quote:
Originally Posted by D_o_S View Post
Hi,

anyone have a how to on replacing the rear pads?

What tool (ideally phone based) can I use to rewind the pistons on the parking brake?

What pads would you recommend?

Thank you.
I haven't written a how-to, but I'm pretty sick of doing it.

As far as electronic tools, I have failed at finding an inexpensive one so far. The best tool is mechanical that I've found...

https://www.amazon.com/OrionMotorTec...09120692&psc=1

While the BMW M-sport pads are good (except for track endurance), they squeak wayyyyy too much.

I'd recommend the following pad. I've used it. Works well, not squeaky....

https://racingbrake.com/pd2059-391

I can help you if you need it. It's pretty much a standard replacement from grandma's 528i except for the electronic parking brake, which retracts mechanically with the proper tool (above).

Shawn
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      05-16-2021, 02:55 PM   #3
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Quote:
Originally Posted by shawnhayes View Post
The best tool is mechanical that I've found...

https://www.amazon.com/OrionMotorTec...09120692&psc=1
I want to thank you for sharing your experience with the brakes. Very helpful and the tool you found does make it less of a hassle for the rears.
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      05-19-2021, 03:12 PM   #4
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retracting the brake pad is pretty easy to do without any tools. I simply put a tube and bottle on the brake bleed line, crack it open and then when i loosen the caliper carrier, i simply apply pressure against the rotor with the brake pad and it compresses the piston. These calipers are new enough they should move pretty easy. This is what i do on every sliding caliper ive owned with no issues. this also won't lose enough fluid to be an issue if you dont have any extra.
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      05-22-2021, 03:40 PM   #5
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Quote:
Originally Posted by Maverik259 View Post
retracting the brake pad is pretty easy to do without any tools. I simply put a tube and bottle on the brake bleed line, crack it open and then when i loosen the caliper carrier, i simply apply pressure against the rotor with the brake pad and it compresses the piston. These calipers are new enough they should move pretty easy. This is what i do on every sliding caliper ive owned with no issues. this also won't lose enough fluid to be an issue if you dont have any extra.
This will NOT work on the rear brake pads because of the electronic parking brake, and if you force it you will be paying for several hundred dollars of electric brake servos. Don't do that on your new M5 on the rear. Either buy that tool, or find some electronic tool to retract the caliper. This has been a known service issue addressed by multiple posts and multiple companies, and a bunch of fuzzbutts who thought they knew better with prybars and extensions ended up buying a bunch of new brake parts.

Your approach WILL work on the fronts as they have no parking brake attachment, and work just like any other fixed multipiston brake.

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      05-22-2021, 03:45 PM   #6
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Originally Posted by shawnhayes View Post
This will NOT work on the rear brake pads because of the electronic parking brake, and if you force it you will be paying for several hundred dollars of electric brake servos. Don't do that on your new M5 on the rear. Either buy that tool, or find some electronic tool to retract the caliper. This has been a known service issue addressed by multiple posts and multiple companies, and a bunch of fuzzbutts who thought they knew better with prybars and extensions ended up buying a bunch of new brake parts.

Your approach WILL work on the fronts as they have no parking brake attachment, and work just like any other fixed multipiston brake.

Shawn
Can you tell me what tool is needed to retract the rear brakes?
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      05-22-2021, 04:05 PM   #7
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Quote:
Originally Posted by 16HC View Post
Can you tell me what tool is needed to retract the rear brakes?
This works....

https://www.amazon.com/OrionMotorTec...09120692&psc=1

Here's how to use it...



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      05-22-2021, 06:52 PM   #8
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Originally Posted by shawnhayes View Post
This works....

Shawn
It's a more complete set than the one offered by Harbor Freight, and it's half the price. Amazing.
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      05-22-2021, 07:43 PM   #9
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It's a more complete set than the one offered by Harbor Freight, and it's half the price. Amazing.
Used it twice already. Much easier than removing the brake motor.

Shawn
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      05-22-2021, 11:18 PM   #10
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Quote:
Originally Posted by shawnhayes View Post
This works....

https://www.amazon.com/OrionMotorTec...09120692&psc=1

Here's how to use it...



Shawn
Thank you!
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      05-23-2021, 09:06 PM   #11
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I noticed they do not use shims on the outside of the pads like on Japanese cars I am used to working on.
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      05-29-2021, 08:31 PM   #12
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Quote:
Originally Posted by AHall View Post
I noticed they do not use shims on the outside of the pads like on Japanese cars I am used to working on.
The stock pads come with rubber pads that are stuck to the backing plates. They work pretty well.


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      07-05-2021, 10:54 PM   #13
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Thanks to all for this thread. I installed rear brakes myself today, very easy - if you have all the tools suggested in this thread and video.

I used R1 rear brakes. I will post post pics of the difference between those R1 pads and OEM. But, my brake noise is gone.
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      07-06-2021, 08:53 PM   #14
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Quote:
Originally Posted by shawnhayes View Post
Quote:
Originally Posted by Maverik259 View Post
retracting the brake pad is pretty easy to do without any tools. I simply put a tube and bottle on the brake bleed line, crack it open and then when i loosen the caliper carrier, i simply apply pressure against the rotor with the brake pad and it compresses the piston. These calipers are new enough they should move pretty easy. This is what i do on every sliding caliper ive owned with no issues. this also won't lose enough fluid to be an issue if you dont have any extra.
This will NOT work on the rear brake pads because of the electronic parking brake, and if you force it you will be paying for several hundred dollars of electric brake servos. Don't do that on your new M5 on the rear. Either buy that tool, or find some electronic tool to retract the caliper. This has been a known service issue addressed by multiple posts and multiple companies, and a bunch of fuzzbutts who thought they knew better with prybars and extensions ended up buying a bunch of new brake parts.

Your approach WILL work on the fronts as they have no parking brake attachment, and work just like any other fixed multipiston brake.

Shawn
Ok. Though I don't see what I mentioned to be any different. Both are simply pushing the pad back into the caliper…
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      07-11-2021, 08:39 AM   #15
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Quote:
Originally Posted by Maverik259 View Post
Ok. Though I don't see what I mentioned to be any different. Both are simply pushing the pad back into the caliper…
The rears are actually screwed back into the caliper, not simply pushed back like most other BMW brakes.
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      07-13-2021, 02:00 PM   #16
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Quote:
Originally Posted by 5tony View Post
Quote:
Originally Posted by Maverik259 View Post
Ok. Though I don't see what I mentioned to be any different. Both are simply pushing the pad back into the caliper…
The rears are actually screwed back into the caliper, not simply pushed back like most other BMW brakes.
Ok. But the pad doesn't twist. Does that tool attach to the pad or do you have to remove the pad and attach to the piston?
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      07-13-2021, 07:53 PM   #17
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Quote:
Originally Posted by Maverik259 View Post
Ok. But the pad doesn't twist. Does that tool attach to the pad or do you have to remove the pad and attach to the piston?
Watch the video in post #7 from the 4:45 point, it'll explain how it works.
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      07-13-2021, 07:54 PM   #18
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Quote:
Originally Posted by Maverik259 View Post
Ok. But the pad doesn't twist. Does that tool attach to the pad or do you have to remove the pad and attach to the piston?
I hope I can properly explain this, as I recently changed the rear pads with that tool.

For our rear brakes, you use a round no. 8 disk that fits onto the brake piston. As you turn your tool, it turns the disk, which turns the brake piston inward.
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      07-14-2021, 02:48 PM   #19
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shawnhayes, thanks for providing info on that brake tool. It made the install that much easier and quicker!
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      08-03-2021, 10:27 PM   #20
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Quote:
Originally Posted by 16HC View Post
shawnhayes, thanks for providing info on that brake tool. It made the install that much easier and quicker!
You are very welcome. I had to do this TWO times without that tool, and disassembling the EPB with torx screwdrivers was A PAIN.

I hope you enjoy the car.

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      08-03-2021, 10:37 PM   #21
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Quote:
Originally Posted by Maverik259 View Post
Ok. Though I don't see what I mentioned to be any different. Both are simply pushing the pad back into the caliper…
It's explained above. You CANNOT "push" the rear piston back into the caliper. However, be my guest at trying. I understand the bill is $1000+ to replace the broken servos on the back of the caliper, who's entire purpose of existence is to keep the piston close to the pad, and allow a small electric motor to mechanically "screw" the pads tight on the rotor when parking.

I tried to use a normal piston tool to "push" the piston back in. Being an old hand at doing this, there was WAY too much resistance that I was comfortable with. All I had to do was look up bavarian autosports video on how to do it to understand that if I had followed through with what you said, the bill would have been EPIC. But here's what you have to do if you don't have the mechanical "winder" tool (like shown above) or an electronic tool to retract them electrically (this should be possible). But, for posterities sake:



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      03-09-2023, 01:38 PM   #22
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Unlike the rear brake pads, can anyone shed some light as to why the BMW factory manual states several times to NOT use paste/lubricant on the pads or the retaining hardware for the fronts?

Is there some special coating on the front retaining clips?
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