Brembo Pads and Warped New Rotors

[bwp240]

Hi all,

I recently replaced all 4 rotors and pads on my '14 Regal GS and felt a vibration in the front during braking, especially from highway speeds. Initially thought it was bad bushings (car has 120,000 miles), and while the bushings were worn, mechanics said they do not need to be replaced. Turned out that my brand new rotors had warped. After getting them turned (tech said they took about 0.3mm off), the vibrations were gone. Well, after about a month and a couple thousand more miles, the front of the car is shuttering again during highway braking just like before. The vibrations only happen at braking above 25 MPH and are exponentially worse at highway speeds.

These are the parts I had used for the front brakes:
Rotors: Centric 12162140 345mm Rotors
Pads: Brembo P59079 Low Metallic Pads

First thought is to get the rotors turned again; however, what is to stop them from warping again? I don't want to get them turned every other month, and I am sure I will run out of metal quickly. When I got them turned the first time, I did not see any uneven wear in the pad material.

Should I just cut my losses and replace the rotors with something else (High Performance, Slotted, Heavy Duty)? I could replace the pads. While I like the stopping power, they create an obscene amount of dust (such is metallic pads - they did not have Brembo ceramics when I ordered - now they do 😒). I am not sure if this is a product of fancy performance pads and "cheaper" rotors. I have Centrics on my other cars (including the rears on the GS), and have had no issues. Perhaps the Brembo pads just generate too much concentrated heat (seems false) or I just got a bad set.

Just wanted to get some thoughts. Thanks!

 

[killrwheels]

I recently updated the front brakes on the GS with only 27k original miles on unit. Car sits garaged , but the brakes have a little shutter and dealer said rotors were glazed.

The dealer pricing was over 600.00 for Delco pads and resurfacing the current rotors, so I did some homework.

I added the GM Performance slotted rotors and the Z26 Powerstop Ceramic Pads. The only challenge was the pad kit came with Brembo caliper pins that were to short and dealing with manufacturer was difficult to resolve. The rotors look nice against the Brembo's and 20's. I usually use Akebono or EBC ceramic pads. No noise or dust to date, however car is used infrequently at best and followed the pad break-in exactly as offered. Wish I could offer more on rotors long term. Appears AC Delco rotors might be manufactured/private labeled from Raybestos.

ACDELCO 18A80676SD (rotors) --80 bucks each
POWER STOP Z261001 --- 70 dollars
GM PIN KIT -- Brembo's --- 25 bucks x 2 kits
Brake Fluid --- DOT 4 -- under 15.00 bucks

 

[jimmys5600]

Are you pleased with the stopping power of the Z26 pads?

 

[ulycyc]

Centric rotors are not best product on the shelf. Buy the AC Delco next time

 

[bwp240]

Just wanted to update this thread. I talked with some race shops in my area (regarding potential heat/compatibility issues with Brembos and Centric). They were not aware of any; however, they suggested going with Bosch as a nice balance between performance and budget. I replaced them a few months ago and so far have had no issues.