I installed the Brembo GT brake kits front and rear on my car a few months ago. As soon as I installed them, I noticed they squealed very loudly when applying medium pedal pressure. I figured the noise was just because they were new pads and it would subside over time. It has been several months now and ~500 miles, but they are just as loud as ever. I know they are racing brakes, but the squeal is very loud. I am sure other cars on the road can notice.
I found this video where they apply grease to the shims on the Brembos on a Scat Pack to make the noise go away:
I didn't apply any grease during installation. I guess I assumed it would already be greased because the calipers/pads/etc came per-assembled. However, I am not sure this should even be necessary. The noise coming from the Scat Pack Brembo's is not nearly as loud as mine.
I contacted CSG and they said it is the pads. They suggested switching to Project Mu Type-PS pads to reduce the NVH. But they noted that these pads will have considerably less performance than the currently installed Brembo pads. This is not a track car, it is my daily and I do a few Auto-X events per year with it. So I am concerned about performance, specifically initial bite, so I would rather not have to downgrade the pads if I don't have to.
I know the Brembo GT kits are popular here. Do any other users have experience with this issue? Did you apply grease to the pads/shims? Did the noise eventually go away?
Pics for attention:
