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      07-13-2018, 02:30 PM   #1
eeyang92
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Bedding In Carbon Ceramic Pads Over Stock Pads?

Title may be a bit confusing, but basically I just got the Powerstop Z23 street pads, mainly for less brake dust. My usual procedure to "clean" my rotors is to run my track pads cold for a day to scrape off the old material before putting on the new ones.

I'm wondering if this is even necessary? If I properly bed in the the new pads, would that be fine? Or would the new pad be too soft to scrape off the old transfer layer? (I assume it's softer since it's braking ability is less according to reports, although this may not necessarily be true since it's a different compound)

I am heading to the track in the next few months so I can put off installing the new pads till after - not a big deal either way.
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      07-15-2018, 02:20 AM   #2
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Quote:
Originally Posted by eeyang92 View Post
Title may be a bit confusing, but basically I just got the Powerstop Z23 street pads, mainly for less brake dust. My usual procedure to "clean" my rotors is to run my track pads cold for a day to scrape off the old material before putting on the new ones.

I'm wondering if this is even necessary? If I properly bed in the the new pads, would that be fine? Or would the new pad be too soft to scrape off the old transfer layer? (I assume it's softer since it's braking ability is less according to reports, although this may not necessarily be true since it's a different compound)

I am heading to the track in the next few months so I can put off installing the new pads till after - not a big deal either way.
Yes,bed them in exactly as powerstop advise. I had the Z26 version and bedded them in as advise and they worked fine. HOWEVER!! They clunked like mad when going into reverse or coming to a stop to reverse. So pulled them out. Im interested to see if you get any clunking from the Z23.

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      07-16-2018, 01:16 PM   #3
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Originally Posted by GreatWhiteM2 View Post
Yes,bed them in exactly as powerstop advise. I had the Z26 version and bedded them in as advise and they worked fine. HOWEVER!! They clunked like mad when going into reverse or coming to a stop to reverse. So pulled them out. Im interested to see if you get any clunking from the Z23.

I have the Z26 pads now, installed them recently. Havent heard a single clunk from mine. In the morning, backing out of the garage, the first stop or two does produce a loud squeal though.
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      07-16-2018, 01:35 PM   #4
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Originally Posted by GreatWhiteM2 View Post
Yes,bed them in exactly as powerstop advise. I had the Z26 version and bedded them in as advise and they worked fine. HOWEVER!! They clunked like mad when going into reverse or coming to a stop to reverse. So pulled them out. Im interested to see if you get any clunking from the Z23.

I have the Z26 pads now, installed them recently. Havent heard a single clunk from mine. In the morning, backing out of the garage, the first stop or two does produce a loud squeal though.
Thanks for the feedback. Strange mine do. Did you grease or no grease?

We tried both ways and still clunk clunk
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      07-16-2018, 01:46 PM   #5
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Thanks for the feedback. Strange mine do. Did you grease or no grease?

We tried both ways and still clunk clunk
No grease, I just popped the old pads out and slid the new ones in. Then I followed the manufacturers instructions for bedding them in.

Did you just do pads? Or did you also do the lines? When I put the new pads in, they were pretty snug in there. Maybe try topping off your brake fluid to ensure proper pressure? Not sure if that would help or not.
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      07-16-2018, 01:57 PM   #6
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Originally Posted by GreatWhiteM2 View Post
Thanks for the feedback. Strange mine do. Did you grease or no grease?

We tried both ways and still clunk clunk
No grease, I just popped the old pads out and slid the new ones in. Then I followed the manufacturers instructions for bedding them in.

Did you just do pads? Or did you also do the lines? When I put the new pads in, they were pretty snug in there. Maybe try topping off your brake fluid to ensure proper pressure? Not sure if that would help or not.
Just did the pads mate.

Will have another look. Other than the clunk the less dust is great!!
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      07-16-2018, 05:00 PM   #7
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My pads rattle (clunk) in the calipers also....they have on the last 3 BMW's I replaced pads in. Z16 in the 1 series and M235, Z23 in the M4 & M2

Just so you know the Z23 & Z26 share the same pad. The only difference it the backing shim. The Z23 has a rubberized backing shim to dampen more noise the Z26 has just a different thickness non rubberized shim to increase its resistance to heat that larger cars or higher HP cars can generate on the pads but it is the exact same pad & material.

Their pads are great and quite affordable that is why I continue to use them...but then I don't officially track. I am going to try out a set of Z26's to see if the different backing shim causes additional noise. The Z23's have always given me a shout when backing out of the garage.....my wife just loves it in the morning when she is sleeping
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Last edited by m2ruder; 07-16-2018 at 06:01 PM.
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      07-17-2018, 03:16 AM   #8
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Quote:
Originally Posted by m2ruder View Post
My pads rattle (clunk) in the calipers also....they have on the last 3 BMW's I replaced pads in. Z16 in the 1 series and M235, Z23 in the M4 & M2

Just so you know the Z23 & Z26 share the same pad. The only difference it the backing shim. The Z23 has a rubberized backing shim to dampen more noise the Z26 has just a different thickness non rubberized shim to increase its resistance to heat that larger cars or higher HP cars can generate on the pads but it is the exact same pad & material.

Their pads are great and quite affordable that is why I continue to use them...but then I don't officially track. I am going to try out a set of Z26's to see if the different backing shim causes additional noise. The Z23's have always given me a shout when backing out of the garage.....my wife just loves it in the morning when she is sleeping
Yep, I got the Z23's strictly for street, and the price is extremely reasonable (compared to stock pads) with less brake dust.
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      07-17-2018, 02:51 PM   #9
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Any pad change is ideal to be accompanied with light sanding of rotor for better bedding of the pad to the existing rotor (unless you change rotor along with pads).

All pads leave its own wear on the rotor. Wear that has been resulted from using one pad will most likely to result in unsafe and reduced performance at the same time.



This videos will give you a good idea of the reason and the procedure.
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