New Brakes and Rotors- now I have noise

[seannb78]

I had my new cross dilled and slotted Zimmerman rotors and PBR ceramic front/ Hawk ceramic rear pads installed last Friday and I have a humming noise coming from my left front wheel area.

I took it back to the shop that did the install and they reinspected and said everything looks okay and they feel that it is probably extra road noise from the new rotors and pads. I asked if it could be a wheel bearing and they said it was very unlikely. My question now is, what do you all think. I havent taken the car to Audi to have them inspect, but what could this new noise be.

It is heard the loudest going 60-65 mph and almost completely goes away under 20 mph. Over 65, you cant really hear it. Could it be a warped rotor? Is my pad constantly rubbing on the rotor and if so is there some type of adjustment to back the pad away from the rotor a little?

Give me some ideas here before I take it to Audi and get the "you didnt have the work done here" lecture.

Also, it should be mentioned that all of this was ordered from ECS, and I did have some issues with the order being changed multiple times due to availability, but the did ship for free due to these issues.

[extremesport3]

I too have a new brake setup on my car and experience noise and road vibration. ECS sucks, i think my rotors are warped and they want to have nothing to do with it. I would have to remove the rotors and send them to ECS to have them checked which means in the mean time i would be without a car. They do not stand by there products and are not loyal to their customers. Im sorry to say but you have become another sucker for them, welcome to the club. Their products are horrible which goes hand and hand with their customer support.

[coryliv]

I hope this isn't common with those rotors. I bought some but haven't installed yet. I didn't get the same pads but the ones you selected claim they're low noise. I think I'll ride out the oem setup for as long as possible. If you find out whats wrong please update your post.

[4-tified]

I had my new cross dilled and slotted Zimmerman rotors and PBR ceramic front/ Hawk ceramic rear pads installed last Friday and I have a humming noise coming from my left front wheel area.

I took it back to the shop that did the install and they reinspected and said everything looks okay and they feel that it is probably extra road noise from the new rotors and pads. I asked if it could be a wheel bearing and they said it was very unlikely. My question now is, what do you all think. I havent taken the car to Audi to have them inspect, but what could this new noise be.

It is heard the loudest going 60-65 mph and almost completely goes away under 20 mph. Over 65, you cant really hear it. Could it be a warped rotor? Is my pad constantly rubbing on the rotor and if so is there some type of adjustment to back the pad away from the rotor a little?

Give me some ideas here before I take it to Audi and get the "you didnt have the work done here" lecture.

Also, it should be mentioned that all of this was ordered from ECS, and I did have some issues with the order being changed multiple times due to availability, but the did ship for free due to these issues.

Does the "hum" occur while moving with NO brake applied?
Does the "hum" seem to get louder when you are slowing down?
IOW, does it hum and then REALLY hum when you're hard on the brakes?
A bearing sounds very much like that.
I had cross drilled rotors and carbon pads on a car a few years back that made an odd light "hum" type sound, but it only did it under braking, and the sounds was consistent all around, not just in one corner.
The sound was made by the wind going through the cross drilled holes as the pad zipped past.

Have you lifted the corner up and spun the wheel freely by hand?
Try it and feel for any drag that may be there from the pad being too close to the rotor. You can also lock the wheel in place, place it in gear, or better yet have someone hold down the brake pedal, grab the tire att 12 o'clock and 6pm and try to move the 12 o'clock toward you while holding 6pm in place, and then alternate. If you feel any looseness and the wheel does move on that plane, then you could have a bearing problem.
Remember, you're not trying to move the whole wheel in and out of the axle, you want to see if it moves on the axle axis back and forth, while the axle is holding it in place.

[seannb78]

No humming when I am on the brakes.
It does happen when I slow down, but when I am slowing down to hear the noise, I am letting the car coast without using the brakes. It also happens when I get up to certain speeds. It never gets real loud, but it is enough that I notice it. I think it is the new brakes, but I havent lifted the corner yet to see if there is rubbing when I spin the wheel.

[coryliv]

Well I installed my rotors this past weekend and now have the hum/vibration issue at low speeds (not while braking). I'm guessing the rotors are warped which can happen depending on how they are stored over time. I bought the zimmerman cross drilled rotors. I installed the oem (pagid) replacement pads as well. I think I've learned my lesson on replacing oem parts with after market ones. Either guy the expensive route and buy quality parts or stick with oem. Otherwise you end up with a mess of issues. I am going to take my car somewhere soon to have the brakes checked out. Hopefully its just a warped rotor.