I just had some Cobalt GT's put on. I heard mixed reviews about them squeeking. I reused the factory shims and greased them.

I just drove my car home and to my luck they do squeek pretty loudly right before it comes to a complete stop. I tried the break in instructions on the package. Something like, drive up to 50 mph and gently break until 10- 15 mph. Do this about 4 to 5 times. Then drive for 10 min. without breaking to cool down the rotors. Then step one a gain, but with hard breaking.
I went through it all and on my way home they started to squeek. It also said to let it sit overnight, Im hoping that will help.

Did I do this right or was there a better way?

Feel free to comment in if you own Cobalt GT's also.

 

sounds about like how i bedded in my pads on my other car. just make sure you get enough heat in them to burn off any contaminants or coatings. you should be able to smell some stuff (at least i did.)

 

It is important to do the second round of bedding-in. This gets rid of any resins that are found in non-race pads. If you don't, and suddenly start track driving, you could experience "green fade" or a total loss of braking force!

I bedded-in some Ferodos last night. Did 160kmh-80kmh about 7 times on the Autobahn, cooled off, and repeated.

If they squeak, especially on slow braking attempts, you may not have enough anti-sqeak lube in the calipers. Give it some time to see if it goes away.

///Robin

 

Here's a link to an excellent StopTech white paper on brake pad & rotor bed-in.

http://www.stoptech.com/whitepapers/bedincontents.htm

 

Here's another sorry for the length.

Item 1 . PREPARING ROTORS
STREET and/or LIGHT TRACK EVENT APPLICATIONS

What proper

 

Wow thats a lot of info. I guess I should do a second round of bedding tomorrow. Ill see if it still squeeks than. Its pretty loud right now.

I have a few hundred mile drive up to the track so that will also give me more time to break them in.

Thanks for all the info

 

No Prob. Keep the rubber side down!

 

They may still squeak, it is the nature of the beast. I used the shims with lube on my race pads and they squeak a little bit only during light braking. As a matter of fact, the lube disintigrated. I'm not going to use the lube or the shims on my track pads in the future.

 

Interesting how the article mentions that new rotors should be paired with "already-bedded-in" pads, yet workshops and $tealers always insist on replacing both pads and rotors at the same time.

///Robin

 

That's because they are just out to get your money. Most racers I've talked to say always break in new rotors with used pads, and new pads with used rotors. Helps prevent uneven material deposition.

As to the original poster -- the squeeking does not have anything to do with break-in. Semi-track pads are going to squeek. If you don't want them to squeek, just use street pads. The OEM Honda pads work fine (except on the track) and won't squeek or dust hardly at all.