Brakes are loud

[Therealmattlex]

Do you have brembo brakes? If so check the metal clips that keep the pads from vibratting. The need to actually clip onto the pins or they will scrape the outside of the rotors. I use a screwdriver under the clip to seat it into place.

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[sk47]

Hello; Having done many brake jobs over the decades from simply replacing pads or shoes to putting on new calipers, I just do not see how a rubbing disk brake is acceptable. On the older style drum brakes it was some acceptable when replacing shoes to use the adjuster so that the drum lightly scuffed on the shoe. Only took a few miles to quiet this down.

Do you have brembo brakes? If so check the metal clips that keep the pads from vibratting.

Hello; With a new to the owner aftermarket set of calipers & rotors there might be some such feature in play. Some aftermarket parts have come with decent instructions. Some have come with poorly translated that are hard to follow. A few were just a part in a box.

My next WAG has to do with the piston of a caliper which gets pulled back a little after the brakes are applied and then released. My take is two things tend to do this. First is the slight play in a wheel bearing which will push the caliper piston back. The other is a rubber like seal which keeps the fluid from leaking out around the piston. For the first the wheel must roll some. Fpr the second it is the brakes are released when stationary.

Over the years I have had some caliper pistons tend to stick. I usually try to "fix" the old part. I have tried different ways. Even to the point of taking a caliper apart and using a hone on the inside of the caliper bore. Seems more often than not I wind up getting a new caliper eventually.

 

[AM3Gross]

Couple things here. I do have the Brembo brakes, and those pins are seated correctly on the clips.

I also agree that the noise is unacceptable, however I am not 100% sure that the new parts are the cause just yet. I also understand that a break in period may be needed.

As far as the calipers, I dont believe there to be an issue there because #1 it is on both sides. additionally if the calipers had any issues I would think that it would be making the same noise during the full motion and not just in one location on the rotor.

Now, while I am sitting here thinking about it, I wonder if I flipped the rotor say 180 degrees if the noise will remain in the same spot on the rotor or if it will change.

another thought, the rotors had stickers on them saying which side they should go on, could they have maybe swapped them around??



-Juice

 

[sk47]

I also understand that a break in period may be needed.

I dont believe there to be an issue there because #1 it is on both sides. additionally if the calipers had any issues I would think that it would be making the same noise during the full motion and not just in one location on the rotor.

flipped the rotor say 180 degrees if the noise will remain in the same spot on the rotor or if it will change.

ch side they should go on, could they have maybe swapped them around??

Hello; On some of the Porsche brake systems I have worked on there was a clear "bed" in procedure. Not to my thinking the same sort of thing you experience.

Generating a noise on one particular spot during the rotation of the disk would make me think the disks are not true. Mounting the rotor 180 degrees different might give a clue. I assume you will mark the spot.

This is only a guess. I assume the directional part is for the drilled & slotted parts of the rotors. Offhand cannot think of a reason they could not be switched.

Have yo contacted the company which sold you the brake system?

 

[WD Pro]

Couple things here. I do have the Brembo brakes, and those pins are seated correctly on the clips.

I'm sure I recall that some aftermarket clip manufacturers have had this complaint.

I think I read it ref the clips that come with the Z23 / Z26 pads - I think the general consensus was to bin them and reuse (or replace them with) OE ?

Maybe it was just a batch issue - I can't see any reputable manufacturer knowingly continue using a product that caused noise (but that doesn't allow for old stock).

WD

 

[JTM88]

I had the same issue a few months ago when I put z23 pads on my GT. I ended up just switching back to the stock clips, and it fixed the noise.

 

[AM3Gross]

I had the same issue a few months ago when I put z23 pads on my GT. I ended up just switching back to the stock clips, and it fixed the noise.

I will look into the clips tonight and rule those out if I can

 

[Therealmattlex]

I will look into the clips tonight and rule those out if I can

If you take the lower pin out then remove the clip you can see if it’s been rubbing on the rotor.

 

[AM3Gross]

you guys rock! took the front wheels off and checked, it was exactly what yall said it was. bit of a dumb a** on my end as I should have known. Many thanks to all of you!

 

[Therealmattlex]

you guys rock! took the front wheels off and checked, it was exactly what yall said it was. bit of a dumb a** on my end as I should have known. Many thanks to all of you!

Don’t feel to bad. I’ve been wrenching on cars for a long time but you can guess why I thought this was the issue. At least it’s a very minor issue.

 

[TonyT930]

Wow!!! That's crazy. Maybe notify Powerstop of the issue. I'm glad you found the issue

 

[AM3Gross]

One would think the amount of money we spend on this stuff that it would be correct. Shouldn't have to use old parts or even question the new parts. But at the end of this day, I am happy. No more scraping sounds and they fixed the original issue.

 

[Therealmattlex]

I was able to use the powerstop hardware but I just had to snap it into place. I wouldn’t say it’s a defect, I would say it’s a different style we aren’t use to(Brembo). With a flat blade screwdriver and very little force it can be clipped into place.

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