I went to the track Monday of last week and drove my car 3 days on the street. At the track and rom the track the brakes performed normally but the next day they where shuddering about halfway to work.

The wheel isn't shaking and I do not feel anything odd through the brake pedal so I think the rotors are straight. It acts like part of the rotors are glazed. How could this happen on the street though without any hard braking?

These are carbotech xp12/xp10 running on new centric rotors.

 

Did you properly bed the pads in on new rotors?


Everyone says that CT pads are fairly friendly but regardless they should not be street driven. I suspect that is the majority of the problem...wrong application for a race pad.


Edit; See link.
http://www.zeckhausen.com/avoiding_brake_judder.htm

 

I leave my XP10/8's on when I drive on the street. No problems besides noise, and they stop much better than stock even when cold.

 

I did get the prebedded pads with new centric rotors if that makes a difference.

 

you didn't use the ebrake on when the brakes where hot?

I run xp8/xp10 all the time with no probs

 

They bedded in fine. They worked great at the track as well.

I don't use the ebrake when the pads are hot.

I noticed no shuddering the first 5 minutes of driving and as they got warm it started again. I then did 4 hard stops rom 60-20 and they seemed ok again. I am guessing it is a temperature issue.

 

Just to update everyone. This seems to be normal when the pads are not full temp and they are fine at normal operating temperatures.