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      09-29-2020, 06:41 PM   #1
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Electronic Parking Brake and Swapping to Track Pads?

I recently saw a You Tube video where someone was swapping brake pads on an X3M with an electronic parking brake - looked like a royal pain-in-the-a$$.

What are people's thoughts on swapping out to track pads on the G8x? It seems like many other performance cars are going to electronic parking brakes as well - so people who like to go to the track just might have to forget about the good old days of quickly swapping out brake pads - unless you're ok with tracking increasingly-older cars...
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      09-29-2020, 07:25 PM   #2
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Depending on the type of e brakes

https://mechanicbase.com/brakes/chan...parking-brake/

BMW use the type with a electric motor that connects to each calliper so track rats are screwed unless we are willing to run a dual purpose pads
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      09-29-2020, 07:50 PM   #3
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Quote:
Originally Posted by Karmic Man View Post
Depending on the type of e brakes

https://mechanicbase.com/brakes/chan...parking-brake/

BMW use the type with a electric motor that connects to each calliper so track rats are screwed unless we are willing to run a dual purpose pads
That's what I was afraid of...
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      09-30-2020, 08:50 AM   #4
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If I get one for the track it won't even do one day with the stock brake setup

This does sound like a PITA for people who do a lot of dual duty
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      09-30-2020, 08:57 AM   #5
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Quote:
Originally Posted by SYT_Shadow View Post
If I get one for the track it won't even do one day with the stock brake setup

This does sound like a PITA for people who do a lot of dual duty
BMW knows how many of its customers swap between street and track pads on its M cars - especially the M2, M3 and M4. I'm hugely disappointed that BMW couldn't have come up with a solution that would allow for relatively easy pad swaps to continue.

I've been a loyal M3 customer for years now - and one of the things I love about my F80 is how easy it is to swap pads back and forth. Unless BMW or someone else comes up with a practical solution to this issue - I'll consider other manufacturers for my next track car (whether or not a dual-purpose daily driver).
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      09-30-2020, 09:03 AM   #6
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Quote:
Originally Posted by Powerslide View Post
BMW knows how many of its customers swap between street and track pads on its M cars - especially the M2, M3 and M4. I'm hugely disappointed that BMW couldn't have come up with a solution that would allow for relatively easy pad swaps to continue.

I've been a loyal M3 customer for years now - and one of the things I love about my F80 is how easy it is to swap pads back and forth. Unless BMW or someone else comes up with a practical solution to this issue - I'll consider other manufacturers for my next track car (whether or not a dual-purpose daily driver).
It really sucks they went this way. Here I was, completely convinced BMW would just use the M2c brakes on the G8X.

There has been a trend in the last few years to build gigantic front calipers with little itty bitty rear ones. I don't get it.
One could think it's limited to BMWs (X5M, M5, G8X M) but it isn't. I recall seeing the ceramic rotors with sliding rear calipers in the C63 and Merc GT.
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      09-30-2020, 09:18 AM   #7
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Quote:
Originally Posted by SYT_Shadow View Post
It really sucks they went this way. Here I was, completely convinced BMW would just use the M2c brakes on the G8X.

There has been a trend in the last few years to build gigantic front calipers with little itty bitty rear ones. I don't get it.
One could think it's limited to BMWs (X5M, M5, G8X M) but it isn't. I recall seeing the ceramic rotors with sliding rear calipers in the C63 and Merc GT.
Even the M2C brakes aren't ideal for trackers since the calipers need to be removed to swap the pads.
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      09-30-2020, 09:36 AM   #8
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Quote:
Originally Posted by CanAutM3 View Post
Even the M2C brakes aren't ideal for trackers since the calipers need to be removed to swap the pads.
Agreed, but it's a pretty beefy caliper which takes track use quite happily.
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      09-30-2020, 09:54 AM   #9
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Quote:
Originally Posted by SYT_Shadow View Post
Quote:
Originally Posted by CanAutM3 View Post
Even the M2C brakes aren't ideal for trackers since the calipers need to be removed to swap the pads.
Agreed, but it's a pretty beefy caliper which takes track use quite happily.
So I guess the question is - what cars are in production now that would still have easily-swappable pads? Any examples quickly come to mind? I could be mistaken - but I believe the C8 and 2020 GT500 have E brakes in rear from the rear brake calipers - which I would hope would allow for easy repair as swaps...
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      09-30-2020, 10:04 AM   #10
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Quote:
Originally Posted by Powerslide View Post
So I guess the question is - what cars are in production now that would still have easily-swappable pads? Any examples quickly come to mind? I could be mistaken - but I believe the C8 and 2020 GT500 have E brakes in rear from the rear brake calipers - which I would hope would allow for easy repair as swaps...
Exactly, that's the thing, it seems like an industry-wide direction
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      09-30-2020, 10:16 AM   #11
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It was a pain in the ass on my Golf R, expect a process similar to this with the new M3/4.

https://www.youtube.com/watch?v=iA9Sz8RndMo
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      09-30-2020, 01:11 PM   #12
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Quote:
Originally Posted by SYT_Shadow View Post
It really sucks they went this way. Here I was, completely convinced BMW would just use the M2c brakes on the G8X.

There has been a trend in the last few years to build gigantic front calipers with little itty bitty rear ones. I don't get it.
One could think it's limited to BMWs (X5M, M5, G8X M) but it isn't. I recall seeing the ceramic rotors with sliding rear calipers in the C63 and Merc GT.
All big rear brakes do is lock up rear wheels under hard braking. You don't need much brake on the rear and the trend for big rear brakes is mostly cosmetic. It's just that the ABS systems prevent rear wheel locks ups but if you disconnected the ABS, you'd have to fit a proportioning valve in the rear brake line and almost switch the big rear brakes off.
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      09-30-2020, 03:24 PM   #13
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Quote:
Originally Posted by CanAutM3 View Post
Even the M2C brakes aren't ideal for trackers since the calipers need to be removed to swap the pads.
True, honestly now I don't know what we did to deserve the Blue M calipers from F8x M2/3/4s.
Don't know it was so good until it was gone.
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      09-30-2020, 03:26 PM   #14
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Quote:
Originally Posted by poweredbym View Post
True, honestly now I don't know what we did to deserve the Blue M calipers from F8x M2/3/4s.
Don't know it was so good until it was gone.
That's how it usually works!!

Fast-forward 7-8 years to the release of the hybrid M3 and everyone will be saying the G8X was the last real M blahblahblah
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      09-30-2020, 04:05 PM   #15
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Quote:
Originally Posted by SYT_Shadow View Post
That's how it usually works!!

Fast-forward 7-8 years to the release of the hybrid M3 and everyone will be saying the G8X was the last real M blahblahblah
I can see that happening. I guess for that caliper I'm thinking more about how it's a proper fixed design, super easy to service, swap pads and it's completely adequate on the track all from the factory. Almost no chance we'll see that again.

Although I don't like the styling of the G8x, S58 sure beats a hybrid or, gasp!, electric M. Well unless they make something remarkable like using the starter motor as a KERS type thing and call it a hybrid.
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      09-30-2020, 04:08 PM   #16
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Quote:
Originally Posted by poweredbym View Post
I can see that happening. I guess for that caliper I'm thinking more about how it's a proper fixed design, super easy to service, swap pads and it's completely adequate on the track all from the factory. Almost no chance we'll see that again.

Although I don't like the styling of the G8x, S58 sure beats a hybrid or, gasp!, electric M. Well unless they make something remarkable like using the starter motor as a KERS type thing and call it a hybrid.
For sure it beats a hybrid M!!!

The M2c brakes were an upgrade over the M3/4 ones even if they were harder to swap pads into.

The F8X ones also work on the track and I'm sure the G8X ones will as well.
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      04-01-2021, 11:07 AM   #17
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Speaking of track pads, does anyone know the pad shape for the G80?
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      04-02-2021, 02:12 PM   #18
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Quote:
Originally Posted by Powerslide View Post
I recently saw a You Tube video where someone was swapping brake pads on an X3M with an electronic parking brake - looked like a royal pain-in-the-a$$.

What are people's thoughts on swapping out to track pads on the G8x? It seems like many other performance cars are going to electronic parking brakes as well - so people who like to go to the track just might have to forget about the good old days of quickly swapping out brake pads - unless you're ok with tracking increasingly-older cars...
In addition to swapping out pads for the track, us "track rats" have another more serious problem as well. The G80/82 shares the calipers of the X3M/X4M and Competition models. For those of us who prefer to use something other than BMW pads (Hawk; Powerstop; Stop Tech; etc.) there is no other company I have been able to find that manufactures track targeted pads for these cars. Seems that there just hasn't been much demand for track pads for the heavier cars that share these brakes.

I for one sure hope that this changes and soon with G80/82 drivers looking for track focused pads.

BMW G80/G82 Pad#s: Front 34-10-8-093-705 Rear 34-20-8-093-728

Addendum: Has anyone else been thinking about this as we get closer to break in, and the lure of the track becomes overpowering? And while I am at it, I will throw in stainless steel brake lines. Here I am assuming that the brake lines for the X3M/X4M, and perhaps the F90 M5 will probably fit the G8XX as well, but I cannot find a single company that makes these in stainless. Anyone out there have info?
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Last edited by Boomer 2019; 04-24-2021 at 10:01 AM..
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      05-22-2021, 04:02 PM   #19
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Quote:
Originally Posted by Imola3 View Post
It was a pain in the ass on my Golf R, expect a process similar to this with the new M3/4.

https://www.youtube.com/watch?v=iA9Sz8RndMo
For BMW's Electronic Parking brake, it can be MANUALLY retracted using a common tool.

This is a video showing how..



This is the tool that I bought which is similar and works on my 2018 M5

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

I used the procedure from the video that you linked the first three times. I got so sick of it, that I said there MUST be a better way to do it. There is. Watch that first video I linked.

SOMEBODY will eventually make an affordable electronic tool that will retract the pistons. The dealer's tool can do it for sure.

Shawn
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      05-22-2021, 09:43 PM   #20
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the could just kept the fixed calipers....

still rear pads should usually last like twice as much as the front....
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      05-24-2021, 12:33 PM   #21
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Quote:
Originally Posted by pikcachu View Post
the could just kept the fixed calipers....

still rear pads should usually last like twice as much as the front....
Only if you have DSC completely off, if you use the MDM a lot you will go through the rears faster.

After 3400 miles, and one track day that I tried using MDM and DSC never again they rely heavily on rear brake use
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      05-24-2021, 01:23 PM   #22
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Quote:
Originally Posted by spacecowboy85 View Post
Quote:
Originally Posted by pikcachu View Post
the could just kept the fixed calipers....

still rear pads should usually last like twice as much as the front....
Only if you have DSC completely off, if you use the MDM a lot you will go through the rears faster.

After 3400 miles, and one track day that I tried using MDM and DSC never again they rely heavily on rear brake use
Ah i see
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