What's going on guys I have a problem I can't seem to figure out maybe you guys on here could help. I installed new slotted rotors with ceramic brakes from brakemotive. After the installtion I got in my car pumped the brakes a couple times and they were nice and firm but now there is a very loud (think when I door hinge needs oil) sound when im rolling slightly pressing the brakes. When I try to come to a complete stop the car stops but makes a VERY loud thump / clunking noise. I can't seem to figure it out why it's happening.

I took the rotors and brakes off and installed them again applied brake grease on the back of the brakes cleaned the rotors and I am still getting that thumping / clunking sound when I pressed on the brakes.

I can do a video tomorrow so you guys could hear it.. Any idea would be greatly appreciated..


** This is my first set of drilled and slotted rotors**

Make sure the slide pins for the calipers are greased, and also check that your calipers and caliper mounting brackets are bolted down securely.

Will do that first thing in the morning. It's just really annoying sound almost like your riding over the sidewalk.

Video?

https://youtu.be/w27UxXCFGUA

Did you clean the rotors with brake cleaner first? There's a protective layer on the rotors that keeps them from rusting while boxed, but it will cause the pads to slip and glaze if it's not removed.

You could take the car to an empty lot and try some long braking from 60mph to cook it off, but hitting it with brake cleaner is the best way to go.

Aside from that, there's not really a lot of other things to check. Make sure the caliper bolts are tight, grease the back of the pads and the slide pins (which it sounds like you did), and check to make sure the rotors aren't coming into contact with the caliper or the dust shield.

Make sure the bushing that is a part of the bottom slide pin is 100% in tack. I had a terrible noise and this was my problem. Good luck.